Which network interface or IP address in the guest OS corresponds to which in the host OS?2019 Community Moderator ElectionWhy is some virtual network interface assigned private IP address, while some is assigned loopback IP address?kvm guest Network interface no Authenicationpersistent network interface naming and kvmConfusion about interfaces, iptables, connections, local connectionHow do I fix Debian that refuses to connect to the internet in VirtualBox?Detecting which application is using which network interfaceChange Virtual Network Interface of a snapshotKVM Linux guest cannot get network addressNetwork Interface VLAN static addressingdhclient command does not allocate ip address to my interfaceWhen does an IP address not need to be assigned to a network interface?
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Which network interface or IP address in the guest OS corresponds to which in the host OS?
2019 Community Moderator ElectionWhy is some virtual network interface assigned private IP address, while some is assigned loopback IP address?kvm guest Network interface no Authenicationpersistent network interface naming and kvmConfusion about interfaces, iptables, connections, local connectionHow do I fix Debian that refuses to connect to the internet in VirtualBox?Detecting which application is using which network interfaceChange Virtual Network Interface of a snapshotKVM Linux guest cannot get network addressNetwork Interface VLAN static addressingdhclient command does not allocate ip address to my interfaceWhen does an IP address not need to be assigned to a network interface?
I heard that a guest OS and a host OS in KVM can communicate via having network interfaces or IP addresses in the same private network. I also heard that
You can see its IP addresses and network interfaces in the container
and VM networks in ifconfig’s output.
I show the outputs of ifconfig in a guest OS and a host OS below. Could you tell me which network interface or IP address in the guest OS corresponds to which in the host OS, and vice versa? Thanks.
In a Debian guest OS via VMM/KVM,
user@debian:~$ /sbin/ifconfig
ens3: flags=4163<UP,BROADCAST,RUNNING,MULTICAS> mtu 1500
inet 192.168.122.202 netmask 255.255.255.0 broadcast 192.168.122.255
inet6 fe80::5054:ff:fe99:5eee prefixlen 64 scopeid 0x20<link>
ether 52:54:00:99:5e:ee txqueuelen 1000 (Ethernet)
RX packets 5504 bytes 4872073 (4.6 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 4199 bytes 559987 (546.8 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 20044
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1 (Local Loopback)
RX packets 488 bytes 39360 (38.4 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 488 bytes 39360 (38.4 KiB)
TX errors 0 dropped 0 overruns 0 carries 0 collisions 0
In Lubuntu host OS:
$ ifconfig
docker0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
inet 172.17.0.1 netmask 255.255.0.0 broadcast 172.17.255.255
ether 02:42:a6:79:a6:bc txqueuelen 0 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
enp0s25: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
ether txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
device interrupt 20 memory 0xfc400000-fc420000
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 3102389 bytes 174723039 (174.7 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 3102389 bytes 174723039 (174.7 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
virbr0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.122.1 netmask 255.255.255.0 broadcast 192.168.122.255
ether 52:54:00:b1:aa:1f txqueuelen 1000 (Ethernet)
RX packets 708 bytes 68468 (68.4 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 316 bytes 51806 (51.8 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
vnet0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet6 fe80::fc54:ff:fe99:5eee prefixlen 64 scopeid 0x20<link>
ether fe:54:00:99:5e:ee txqueuelen 1000 (Ethernet)
RX packets 257 bytes 28494 (28.4 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 23514 bytes 1240204 (1.2 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
wlx8: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.1.97 netmask 255.255.255.0 broadcast 192.168.1.255
inet6 prefixlen 64 scopeid 0x20<link>
ether 80:1f:02:b5:c3:89 txqueuelen 1000 (Ethernet)
RX packets 1269625 bytes 1045069752 (1.0 GB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 646600 bytes 101897054 (101.8 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
network-interface kvm ip-address
edited 4 hours ago
Stephen Kitt
177k24402480
asked 4 hours ago
TimTim
28.1k78269490
|
show 1 more comment
I heard that a guest OS and a host OS in KVM can communicate via having network interfaces or IP addresses in the same private network. I also heard that
You can see its IP addresses and network interfaces in the container
and VM networks in ifconfig’s output.
I show the outputs of ifconfig in a guest OS and a host OS below. Could you tell me which network interface or IP address in the guest OS corresponds to which in the host OS, and vice versa? Thanks.
In a Debian guest OS via VMM/KVM,
user@debian:~$ /sbin/ifconfig
ens3: flags=4163<UP,BROADCAST,RUNNING,MULTICAS> mtu 1500
inet 192.168.122.202 netmask 255.255.255.0 broadcast 192.168.122.255
inet6 fe80::5054:ff:fe99:5eee prefixlen 64 scopeid 0x20<link>
ether 52:54:00:99:5e:ee txqueuelen 1000 (Ethernet)
RX packets 5504 bytes 4872073 (4.6 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 4199 bytes 559987 (546.8 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 20044
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1 (Local Loopback)
RX packets 488 bytes 39360 (38.4 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 488 bytes 39360 (38.4 KiB)
TX errors 0 dropped 0 overruns 0 carries 0 collisions 0
In Lubuntu host OS:
$ ifconfig
docker0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
inet 172.17.0.1 netmask 255.255.0.0 broadcast 172.17.255.255
ether 02:42:a6:79:a6:bc txqueuelen 0 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
enp0s25: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
ether txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
device interrupt 20 memory 0xfc400000-fc420000
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 3102389 bytes 174723039 (174.7 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 3102389 bytes 174723039 (174.7 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
virbr0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.122.1 netmask 255.255.255.0 broadcast 192.168.122.255
ether 52:54:00:b1:aa:1f txqueuelen 1000 (Ethernet)
RX packets 708 bytes 68468 (68.4 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 316 bytes 51806 (51.8 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
vnet0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet6 fe80::fc54:ff:fe99:5eee prefixlen 64 scopeid 0x20<link>
ether fe:54:00:99:5e:ee txqueuelen 1000 (Ethernet)
RX packets 257 bytes 28494 (28.4 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 23514 bytes 1240204 (1.2 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
wlx8: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.1.97 netmask 255.255.255.0 broadcast 192.168.1.255
inet6 prefixlen 64 scopeid 0x20<link>
ether 80:1f:02:b5:c3:89 txqueuelen 1000 (Ethernet)
RX packets 1269625 bytes 1045069752 (1.0 GB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 646600 bytes 101897054 (101.8 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
network-interface kvm ip-address
edited 4 hours ago
Stephen Kitt
177k24402480
asked 4 hours ago
TimTim
28.1k78269490
Are you doing nat rules? How the ip will correspond to the guest?
– Luciano Andress Martini
4 hours ago
I guess I'm missing the point of your question. This appears to be very basic networking, on the surface. Debian guest, ens3 is assigned 192.168.122.202. Lubuntu host, virbr0 is assigned 192.168.122.1. If you check the ip route and related settings on Debian, you will see the gateway address for Debian is 192.168.122.1. This is normal and more-or-less default behavior for libvirt/KVM/QEMU on Debian and Enterprise Linux based distros, in my experience.
– 0xSheepdog
4 hours ago
How do you "check the ip route and related settings on Debian, you will see the gateway address for Debian is 192.168.122.1 "? @0xSheepdog
– Tim
4 hours ago
I would try the basic command line utility to check the network settings...ip routeFrom the fine man page: linux.die.net/man/8/ip
– 0xSheepdog
4 hours ago
where in the output ofip routeshows the gateway address for Debian? @0xSheepdog
– Tim
4 hours ago
|
show 1 more comment
I heard that a guest OS and a host OS in KVM can communicate via having network interfaces or IP addresses in the same private network. I also heard that
You can see its IP addresses and network interfaces in the container
and VM networks in ifconfig’s output.
I show the outputs of ifconfig in a guest OS and a host OS below. Could you tell me which network interface or IP address in the guest OS corresponds to which in the host OS, and vice versa? Thanks.
In a Debian guest OS via VMM/KVM,
user@debian:~$ /sbin/ifconfig
ens3: flags=4163<UP,BROADCAST,RUNNING,MULTICAS> mtu 1500
inet 192.168.122.202 netmask 255.255.255.0 broadcast 192.168.122.255
inet6 fe80::5054:ff:fe99:5eee prefixlen 64 scopeid 0x20<link>
ether 52:54:00:99:5e:ee txqueuelen 1000 (Ethernet)
RX packets 5504 bytes 4872073 (4.6 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 4199 bytes 559987 (546.8 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 20044
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1 (Local Loopback)
RX packets 488 bytes 39360 (38.4 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 488 bytes 39360 (38.4 KiB)
TX errors 0 dropped 0 overruns 0 carries 0 collisions 0
In Lubuntu host OS:
$ ifconfig
docker0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
inet 172.17.0.1 netmask 255.255.0.0 broadcast 172.17.255.255
ether 02:42:a6:79:a6:bc txqueuelen 0 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
enp0s25: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
ether txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
device interrupt 20 memory 0xfc400000-fc420000
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 3102389 bytes 174723039 (174.7 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 3102389 bytes 174723039 (174.7 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
virbr0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.122.1 netmask 255.255.255.0 broadcast 192.168.122.255
ether 52:54:00:b1:aa:1f txqueuelen 1000 (Ethernet)
RX packets 708 bytes 68468 (68.4 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 316 bytes 51806 (51.8 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
vnet0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet6 fe80::fc54:ff:fe99:5eee prefixlen 64 scopeid 0x20<link>
ether fe:54:00:99:5e:ee txqueuelen 1000 (Ethernet)
RX packets 257 bytes 28494 (28.4 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 23514 bytes 1240204 (1.2 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
wlx8: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.1.97 netmask 255.255.255.0 broadcast 192.168.1.255
inet6 prefixlen 64 scopeid 0x20<link>
ether 80:1f:02:b5:c3:89 txqueuelen 1000 (Ethernet)
RX packets 1269625 bytes 1045069752 (1.0 GB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 646600 bytes 101897054 (101.8 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
network-interface kvm ip-address
edited 4 hours ago
Stephen Kitt
177k24402480
asked 4 hours ago
TimTim
28.1k78269490
I heard that a guest OS and a host OS in KVM can communicate via having network interfaces or IP addresses in the same private network. I also heard that
You can see its IP addresses and network interfaces in the container
and VM networks in ifconfig’s output.
I show the outputs of ifconfig in a guest OS and a host OS below. Could you tell me which network interface or IP address in the guest OS corresponds to which in the host OS, and vice versa? Thanks.
In a Debian guest OS via VMM/KVM,
user@debian:~$ /sbin/ifconfig
ens3: flags=4163<UP,BROADCAST,RUNNING,MULTICAS> mtu 1500
inet 192.168.122.202 netmask 255.255.255.0 broadcast 192.168.122.255
inet6 fe80::5054:ff:fe99:5eee prefixlen 64 scopeid 0x20<link>
ether 52:54:00:99:5e:ee txqueuelen 1000 (Ethernet)
RX packets 5504 bytes 4872073 (4.6 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 4199 bytes 559987 (546.8 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 20044
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1 (Local Loopback)
RX packets 488 bytes 39360 (38.4 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 488 bytes 39360 (38.4 KiB)
TX errors 0 dropped 0 overruns 0 carries 0 collisions 0
In Lubuntu host OS:
$ ifconfig
docker0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
inet 172.17.0.1 netmask 255.255.0.0 broadcast 172.17.255.255
ether 02:42:a6:79:a6:bc txqueuelen 0 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
enp0s25: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
ether txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
device interrupt 20 memory 0xfc400000-fc420000
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 3102389 bytes 174723039 (174.7 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 3102389 bytes 174723039 (174.7 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
virbr0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.122.1 netmask 255.255.255.0 broadcast 192.168.122.255
ether 52:54:00:b1:aa:1f txqueuelen 1000 (Ethernet)
RX packets 708 bytes 68468 (68.4 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 316 bytes 51806 (51.8 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
vnet0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet6 fe80::fc54:ff:fe99:5eee prefixlen 64 scopeid 0x20<link>
ether fe:54:00:99:5e:ee txqueuelen 1000 (Ethernet)
RX packets 257 bytes 28494 (28.4 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 23514 bytes 1240204 (1.2 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
wlx8: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.1.97 netmask 255.255.255.0 broadcast 192.168.1.255
inet6 prefixlen 64 scopeid 0x20<link>
ether 80:1f:02:b5:c3:89 txqueuelen 1000 (Ethernet)
RX packets 1269625 bytes 1045069752 (1.0 GB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 646600 bytes 101897054 (101.8 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
network-interface kvm ip-address
network-interface kvm ip-address
edited 4 hours ago
Stephen Kitt
177k24402480
asked 4 hours ago
TimTim
28.1k78269490
edited 4 hours ago
Stephen Kitt
177k24402480
asked 4 hours ago
TimTim
28.1k78269490
edited 4 hours ago
Stephen Kitt
177k24402480
edited 4 hours ago
Stephen Kitt
177k24402480
edited 4 hours ago
Stephen Kitt
177k24402480
177k24402480
asked 4 hours ago
TimTim
28.1k78269490
asked 4 hours ago
TimTim
28.1k78269490
asked 4 hours ago
TimTim
28.1k78269490
28.1k78269490
Are you doing nat rules? How the ip will correspond to the guest?
– Luciano Andress Martini
4 hours ago
I guess I'm missing the point of your question. This appears to be very basic networking, on the surface. Debian guest, ens3 is assigned 192.168.122.202. Lubuntu host, virbr0 is assigned 192.168.122.1. If you check the ip route and related settings on Debian, you will see the gateway address for Debian is 192.168.122.1. This is normal and more-or-less default behavior for libvirt/KVM/QEMU on Debian and Enterprise Linux based distros, in my experience.
– 0xSheepdog
4 hours ago
How do you "check the ip route and related settings on Debian, you will see the gateway address for Debian is 192.168.122.1 "? @0xSheepdog
– Tim
4 hours ago
I would try the basic command line utility to check the network settings...ip routeFrom the fine man page: linux.die.net/man/8/ip
– 0xSheepdog
4 hours ago
where in the output ofip routeshows the gateway address for Debian? @0xSheepdog
– Tim
4 hours ago
|
show 1 more comment
Are you doing nat rules? How the ip will correspond to the guest?
– Luciano Andress Martini
4 hours ago
I guess I'm missing the point of your question. This appears to be very basic networking, on the surface. Debian guest, ens3 is assigned 192.168.122.202. Lubuntu host, virbr0 is assigned 192.168.122.1. If you check the ip route and related settings on Debian, you will see the gateway address for Debian is 192.168.122.1. This is normal and more-or-less default behavior for libvirt/KVM/QEMU on Debian and Enterprise Linux based distros, in my experience.
– 0xSheepdog
4 hours ago
How do you "check the ip route and related settings on Debian, you will see the gateway address for Debian is 192.168.122.1 "? @0xSheepdog
– Tim
4 hours ago
I would try the basic command line utility to check the network settings...ip routeFrom the fine man page: linux.die.net/man/8/ip
– 0xSheepdog
4 hours ago
where in the output ofip routeshows the gateway address for Debian? @0xSheepdog
– Tim
4 hours ago
Are you doing nat rules? How the ip will correspond to the guest?
– Luciano Andress Martini
4 hours ago
Are you doing nat rules? How the ip will correspond to the guest?
– Luciano Andress Martini
4 hours ago
I guess I'm missing the point of your question. This appears to be very basic networking, on the surface. Debian guest, ens3 is assigned 192.168.122.202. Lubuntu host, virbr0 is assigned 192.168.122.1. If you check the ip route and related settings on Debian, you will see the gateway address for Debian is 192.168.122.1. This is normal and more-or-less default behavior for libvirt/KVM/QEMU on Debian and Enterprise Linux based distros, in my experience.
– 0xSheepdog
4 hours ago
I guess I'm missing the point of your question. This appears to be very basic networking, on the surface. Debian guest, ens3 is assigned 192.168.122.202. Lubuntu host, virbr0 is assigned 192.168.122.1. If you check the ip route and related settings on Debian, you will see the gateway address for Debian is 192.168.122.1. This is normal and more-or-less default behavior for libvirt/KVM/QEMU on Debian and Enterprise Linux based distros, in my experience.
– 0xSheepdog
4 hours ago
How do you "check the ip route and related settings on Debian, you will see the gateway address for Debian is 192.168.122.1 "? @0xSheepdog
– Tim
4 hours ago
How do you "check the ip route and related settings on Debian, you will see the gateway address for Debian is 192.168.122.1 "? @0xSheepdog
– Tim
4 hours ago
I would try the basic command line utility to check the network settings...
ip route From the fine man page: linux.die.net/man/8/ip– 0xSheepdog
4 hours ago
I would try the basic command line utility to check the network settings...
ip route From the fine man page: linux.die.net/man/8/ip– 0xSheepdog
4 hours ago
where in the output of
ip route shows the gateway address for Debian? @0xSheepdog– Tim
4 hours ago
where in the output of
ip route shows the gateway address for Debian? @0xSheepdog– Tim
4 hours ago
|
show 1 more comment
1 Answer
1
active
oldest
votes
Your guest has one non-loopback interface, ens3; that’s the interface it uses to communicate with the host. On the host, the matching interface is the interface in the same network, which is virbr0 here. If you want to list the interfaces which are part of the bridge, run
brctl run virbr0
on the host.
You can also match the routes in the guest to the host: the guest’s gateway will be the host. To see the routes, run
ip route list
The default gateway is given on the “default” line, something like
default via 192.168.122.1 dev ens3 proto static metric 100
answered 4 hours ago
Stephen KittStephen Kitt
177k24402480
add a comment |
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Your guest has one non-loopback interface, ens3; that’s the interface it uses to communicate with the host. On the host, the matching interface is the interface in the same network, which is virbr0 here. If you want to list the interfaces which are part of the bridge, run
brctl run virbr0
on the host.
You can also match the routes in the guest to the host: the guest’s gateway will be the host. To see the routes, run
ip route list
The default gateway is given on the “default” line, something like
default via 192.168.122.1 dev ens3 proto static metric 100
answered 4 hours ago
Stephen KittStephen Kitt
177k24402480
add a comment |
Your guest has one non-loopback interface, ens3; that’s the interface it uses to communicate with the host. On the host, the matching interface is the interface in the same network, which is virbr0 here. If you want to list the interfaces which are part of the bridge, run
brctl run virbr0
on the host.
You can also match the routes in the guest to the host: the guest’s gateway will be the host. To see the routes, run
ip route list
The default gateway is given on the “default” line, something like
default via 192.168.122.1 dev ens3 proto static metric 100
answered 4 hours ago
Stephen KittStephen Kitt
177k24402480
add a comment |
Your guest has one non-loopback interface, ens3; that’s the interface it uses to communicate with the host. On the host, the matching interface is the interface in the same network, which is virbr0 here. If you want to list the interfaces which are part of the bridge, run
brctl run virbr0
on the host.
You can also match the routes in the guest to the host: the guest’s gateway will be the host. To see the routes, run
ip route list
The default gateway is given on the “default” line, something like
default via 192.168.122.1 dev ens3 proto static metric 100
answered 4 hours ago
Stephen KittStephen Kitt
177k24402480
Your guest has one non-loopback interface, ens3; that’s the interface it uses to communicate with the host. On the host, the matching interface is the interface in the same network, which is virbr0 here. If you want to list the interfaces which are part of the bridge, run
brctl run virbr0
on the host.
You can also match the routes in the guest to the host: the guest’s gateway will be the host. To see the routes, run
ip route list
The default gateway is given on the “default” line, something like
default via 192.168.122.1 dev ens3 proto static metric 100
answered 4 hours ago
Stephen KittStephen Kitt
177k24402480
edited 4 hours ago
answered 4 hours ago
Stephen KittStephen Kitt
177k24402480
answered 4 hours ago
Stephen KittStephen Kitt
177k24402480
answered 4 hours ago
Stephen KittStephen Kitt
177k24402480
177k24402480
add a comment |
add a comment |
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Are you doing nat rules? How the ip will correspond to the guest?
– Luciano Andress Martini
4 hours ago
I guess I'm missing the point of your question. This appears to be very basic networking, on the surface. Debian guest, ens3 is assigned 192.168.122.202. Lubuntu host, virbr0 is assigned 192.168.122.1. If you check the ip route and related settings on Debian, you will see the gateway address for Debian is 192.168.122.1. This is normal and more-or-less default behavior for libvirt/KVM/QEMU on Debian and Enterprise Linux based distros, in my experience.
– 0xSheepdog
4 hours ago
How do you "check the ip route and related settings on Debian, you will see the gateway address for Debian is 192.168.122.1 "? @0xSheepdog
– Tim
4 hours ago
I would try the basic command line utility to check the network settings...
ip routeFrom the fine man page: linux.die.net/man/8/ip– 0xSheepdog
4 hours ago
where in the output of
ip routeshows the gateway address for Debian? @0xSheepdog– Tim
4 hours ago