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가상 머신을 시작하기 전에

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가상 머신을 시작하기 전에

호스트에서 CPU(및 BIOS)를 업데이트한 후 현재 KVM 설정이 손상되었으며 이유를 알 수 없습니다. KVM 게스트 부팅 후 약 10초 후에 두 호스트 모두에서 인터넷이나 게스트에 액세스할 수 없습니다. . 내 LAN 내 연결이 여전히 작동하는 것 같습니다. 즉, LAN 내에서 SSH를 통해 호스트/서버에 계속 연결할 수 있으며 기존 VNC 연결은 그대로 유지됩니다.

가상 머신을 시작하기 전에

내 호스트 컴퓨터에서 Debian 11을 실행 중이고 Ubuntu kvm 게스트가 있습니다. 게스트를 시작하기 전에(저는 한 명의 게스트만 사용하고 있습니다 goingmerry) 모든 것이 잘 작동합니다.

$ ping www.google.com
PING www.google.com (142.250.185.68) 56(84) bytes of data.
64 bytes from fra16s48-in-f4.1e100.net (142.250.185.68): icmp_seq=1 ttl=118 time=13.7 ms
64 bytes from fra16s48-in-f4.1e100.net (142.250.185.68): icmp_seq=2 ttl=118 time=12.8 ms
64 bytes from fra16s48-in-f4.1e100.net (142.250.185.68): icmp_seq=3 ttl=118 time=12.8 ms
64 bytes from fra16s48-in-f4.1e100.net (142.250.185.68): icmp_seq=4 ttl=118 time=12.8 ms

# route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
0.0.0.0         192.168.2.1     0.0.0.0         UG    0      0        0 enp5s0
172.17.0.0      0.0.0.0         255.255.0.0     U     0      0        0 docker0
172.18.0.0      0.0.0.0         255.255.0.0     U     0      0        0 br-b30cdaf25b27
192.168.2.0     0.0.0.0         255.255.255.0   U     0      0        0 enp5s0
192.168.2.2     0.0.0.0         255.255.255.255 UH    0      0        0 enp5s0
192.168.122.0   0.0.0.0         255.255.255.0   U     0      0        0 virbr0

(KVM 가상 네트워크가 시작된 것을 볼 수 있습니다( virbr0) route -n.

VM 시작 후(네트워크 중단)

그런 다음 KVM 게스트를 부팅했고 부팅 후 잠시 동안 모든 것이 괜찮았으며(VNC 또는 Spice를 통해 연결하고 브라우저를 열고 웹 사이트를 방문할 수 있었습니다) 호스트와 클라이언트 모두에서 인터넷 연결이 끊어졌습니다. 예를 들어 호스트에서는 다음과 같은 일이 발생합니다.

$ ping www.google.com
PING www.google.com (142.250.185.68) 56(84) bytes of data.
64 bytes from fra24s06-in-f4.1e100.net (142.250.186.100): icmp_seq=42 ttl=119 time=12.2 ms
[...snip ... ]
64 bytes from fra24s06-in-f4.1e100.net (142.250.186.100): icmp_seq=68 ttl=119 time=12.5 ms
From myhost.local (169.254.254.122) icmp_seq=69 Destination Host Unreachable
From myhost.local (169.254.254.122) icmp_seq=70 Destination Host Unreachable
From myhost.local (169.254.254.122) icmp_seq=71 Destination Host Unreachable
From myhost.local (169.254.254.122) icmp_seq=72 Destination Host Unreachable

ping 메시지에 왜 여기에 언급되어 있는지 모르겠습니다 myhost.local( myhost내 호스트의 호스트 이름은 어디에 있습니까).

게스트 실행의 일부 추가 출력은 다음과 같습니다.

# cat /etc/network/interfaces
auto lo
iface lo inet loopback

auto enp5s0
iface enp5s0 inet static
    address 192.168.2.32
    netmask 255.255.255.0
    network 192.168.2.0
    broadcast 192.168.2.255
    gateway 192.168.2.1
    dns-nameserver 192.168.2.22

# route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
0.0.0.0         0.0.0.0         0.0.0.0         U     0      0        0 vnet0
0.0.0.0         192.168.2.1     0.0.0.0         UG    0      0        0 enp5s0
169.254.0.0     0.0.0.0         255.255.0.0     U     0      0        0 vnet0
172.17.0.0      0.0.0.0         255.255.0.0     U     0      0        0 docker0
172.18.0.0      0.0.0.0         255.255.0.0     U     0      0        0 br-b30cdaf25b27
192.168.2.0     0.0.0.0         255.255.255.0   U     0      0        0 enp5s0
192.168.2.2     0.0.0.0         255.255.255.255 UH    0      0        0 enp5s0
192.168.122.0   0.0.0.0         255.255.255.0   U     0      0        0 virbr0

# resolvectl status
Global
         Protocols: +LLMNR +mDNS -DNSOverTLS DNSSEC=no/unsupported
  resolv.conf mode: foreign
Current DNS Server: 192.168.2.2
       DNS Servers: 192.168.2.2
        DNS Domain: lan

Link 2 (enp5s0)
Current Scopes: LLMNR/IPv4 LLMNR/IPv6
     Protocols: -DefaultRoute +LLMNR -mDNS -DNSOverTLS DNSSEC=no/unsupported

Link 3 (br-b30cdaf25b27)
Current Scopes: none
     Protocols: -DefaultRoute +LLMNR -mDNS -DNSOverTLS DNSSEC=no/unsupported

Link 4 (docker0)
Current Scopes: none
     Protocols: -DefaultRoute +LLMNR -mDNS -DNSOverTLS DNSSEC=no/unsupported

Link 5 (virbr0)
Current Scopes: LLMNR/IPv4
     Protocols: -DefaultRoute +LLMNR -mDNS -DNSOverTLS DNSSEC=no/unsupported

Link 6 (vnet0)
Current Scopes: LLMNR/IPv4 LLMNR/IPv6
     Protocols: -DefaultRoute +LLMNR -mDNS -DNSOverTLS DNSSEC=no/unsupported

olor]}
root@myhost:/home/tom# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: enp5s0: <BROADCAST,MULTICAST,DYNAMIC,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether 04:d9:f5:7d:c2:65 brd ff:ff:ff:ff:ff:ff
    inet 192.168.2.32/24 brd 192.168.2.255 scope global enp5s0
       valid_lft forever preferred_lft forever
    inet6 fe80::6d9:f5ff:fe7d:c265/64 scope link 
       valid_lft forever preferred_lft forever
3: br-b30cdaf25b27: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default 
    link/ether 02:42:2f:43:d7:32 brd ff:ff:ff:ff:ff:ff
    inet 172.18.0.1/16 brd 172.18.255.255 scope global br-b30cdaf25b27
       valid_lft forever preferred_lft forever
4: docker0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default 
    link/ether 02:42:d1:c1:1e:35 brd ff:ff:ff:ff:ff:ff
    inet 172.17.0.1/16 brd 172.17.255.255 scope global docker0
       valid_lft forever preferred_lft forever
5: virbr0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
    link/ether 52:54:00:ca:96:bd brd ff:ff:ff:ff:ff:ff
    inet 192.168.122.1/24 brd 192.168.122.255 scope global virbr0
       valid_lft forever preferred_lft forever
6: vnet0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master virbr0 state UNKNOWN group default qlen 1000
    link/ether fe:54:00:a0:ac:92 brd ff:ff:ff:ff:ff:ff
    inet 169.254.254.122/16 brd 169.254.255.255 scope global vnet0
       valid_lft forever preferred_lft forever
    inet6 fe80::fc54:ff:fea0:ac92/64 scope link 
       valid_lft forever preferred_lft forever

var/log/syslog게스트가 시작되면 다음과 같이 표시됩니다.

Oct 31 09:28:47 myhost kernel: [  518.943125] audit: type=1400 audit(1667204927.827:13): apparmor="STATUS" operation="profile_load" profile="unconfined" name="libvirt-24a0099b-399b-4737-b766-6c64a25c18f7" pid=2946 comm="apparmor_parser"
Oct 31 09:28:47 myhost kernel: [  519.075453] audit: type=1400 audit(1667204927.963:14): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="libvirt-24a0099b-399b-4737-b766-6c64a25c18f7" pid=2949 comm="apparmor_parser"
Oct 31 09:28:48 myhost kernel: [  519.204926] audit: type=1400 audit(1667204928.091:15): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="libvirt-24a0099b-399b-4737-b766-6c64a25c18f7" pid=2953 comm="apparmor_parser"
Oct 31 09:28:48 myhost kernel: [  519.316702] audit: type=1400 audit(1667204928.203:16): apparmor="STATUS" operation="profile_replace" info="same as current profile, skipping" profile="unconfined" name="libvirt-24a0099b-399b-4737-b766-6c64a25c18f7" pid=2957 comm="apparmor_parser"
Oct 31 09:28:48 myhost systemd[1]: Started Virtual machine log manager.
Oct 31 09:28:48 myhost connmand[1223]: vnet0 {create} index 6 type 1 <ETHER>
Oct 31 09:28:48 myhost connmand[1223]: vnet0 {update} flags 4098 <DOWN>
Oct 31 09:28:48 myhost connmand[1223]: vnet0 {newlink} index 6 address EA:31:34:19:13:E9 mtu 1500
Oct 31 09:28:48 myhost connmand[1223]: vnet0 {newlink} index 6 operstate 2 <DOWN>
Oct 31 09:28:48 myhost connmand[1223]: Adding interface vnet0 [ ethernet ]
Oct 31 09:28:48 myhost connmand[1223]: vnet0 {newlink} index 6 address FE:54:00:A0:AC:92 mtu 1500
Oct 31 09:28:48 myhost connmand[1223]: vnet0 {newlink} index 6 operstate 2 <DOWN>
Oct 31 09:28:48 myhost connmand[1223]: vnet0 {newlink} index 6 address FE:54:00:A0:AC:92 mtu 1500
Oct 31 09:28:48 myhost connmand[1223]: vnet0 {newlink} index 6 operstate 2 <DOWN>
Oct 31 09:28:48 myhost connmand[1223]: vnet0 {newlink} index 6 address FE:54:00:A0:AC:92 mtu 1500
Oct 31 09:28:48 myhost connmand[1223]: vnet0 {newlink} index 6 operstate 2 <DOWN>
Oct 31 09:28:48 myhost connmand[1223]: virbr0 {newlink} index 5 address 52:54:00:CA:96:BD mtu 1500
Oct 31 09:28:48 myhost connmand[1223]: virbr0 {newlink} index 5 operstate 2 <DOWN>
Oct 31 09:28:48 myhost connmand[1223]: vnet0 {newlink} index 6 address FE:54:00:A0:AC:92 mtu 1500
Oct 31 09:28:48 myhost connmand[1223]: vnet0 {newlink} index 6 operstate 2 <DOWN>
Oct 31 09:28:48 myhost connmand[1223]: vnet0 {update} flags 69699 <UP,RUNNING,LOWER_UP>
Oct 31 09:28:48 myhost kernel: [  519.396033] tun: Universal TUN/TAP device driver, 1.6
Oct 31 09:28:48 myhost kernel: [  519.397012] virbr0: port 1(vnet0) entered blocking state
Oct 31 09:28:48 myhost kernel: [  519.397019] virbr0: port 1(vnet0) entered disabled state
Oct 31 09:28:48 myhost kernel: [  519.397225] device vnet0 entered promiscuous mode
Oct 31 09:28:48 myhost kernel: [  519.397767] virbr0: port 1(vnet0) entered blocking state
Oct 31 09:28:48 myhost kernel: [  519.397776] virbr0: port 1(vnet0) entered listening state
Oct 31 09:28:48 myhost connmand[1223]: vnet0 {newlink} index 6 address FE:54:00:A0:AC:92 mtu 1500
Oct 31 09:28:48 myhost connmand[1223]: vnet0 {newlink} index 6 operstate 0 <UNKNOWN>
Oct 31 09:28:48 myhost systemd-udevd[2968]: Using default interface naming scheme 'v247'.
Oct 31 09:28:48 myhost systemd-udevd[2968]: ethtool: autonegotiation is unset or enabled, the speed and duplex are not writable.
Oct 31 09:28:48 myhost connmand[1223]: vnet0 {add} route fe80:: gw :: scope 0 <UNIVERSE>
Oct 31 09:28:48 myhost connmand[1223]: vnet0 {newlink} index 6 address FE:54:00:A0:AC:92 mtu 1500
Oct 31 09:28:48 myhost connmand[1223]: vnet0 {newlink} index 6 operstate 0 <UNKNOWN>
Oct 31 09:28:48 myhost connmand[1223]: vnet0 {newlink} index 6 address FE:54:00:A0:AC:92 mtu 1500
Oct 31 09:28:48 myhost connmand[1223]: vnet0 {newlink} index 6 operstate 0 <UNKNOWN>
Oct 31 09:28:48 myhost kernel: [  519.499991] audit: type=1400 audit(1667204928.387:17): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="libvirt-24a0099b-399b-4737-b766-6c64a25c18f7" pid=2979 comm="apparmor_parser"
Oct 31 09:28:48 myhost systemd[1]: Started Virtual Machine qemu-1-goingmerry.
Oct 31 09:28:48 myhost kernel: [  519.564602] audit: type=1400 audit(1667204928.451:18): apparmor="DENIED" operation="capable" profile="libvirtd" pid=1350 comm="rpc-worker" capability=39  capname="bpf"
Oct 31 09:28:48 myhost kernel: [  519.565110] audit: type=1400 audit(1667204928.451:19): apparmor="DENIED" operation="capable" profile="libvirtd" pid=1350 comm="rpc-worker" capability=38  capname="perfmon"
Oct 31 09:28:48 myhost libvirtd[2983]: 2022-10-31 08:28:48.458+0000: 2983: info : libvirt version: 7.0.0, package: 3 (Andrea Bolognani <[email protected]> Fri, 26 Feb 2021 16:46:34 +0100)
Oct 31 09:28:48 myhost libvirtd[2983]: 2022-10-31 08:28:48.458+0000: 2983: info : hostname: myhost
Oct 31 09:28:48 myhost libvirtd[2983]: 2022-10-31 08:28:48.458+0000: 2983: warning : virSecurityValidateTimestamp:206 : Invalid XATTR timestamp detected on /srv/vm/lubuntu-1910.qcow2 secdriver=dac
Oct 31 09:28:48 myhost connmand[1223]: vnet0 {newlink} index 6 address FE:54:00:A0:AC:92 mtu 1500
Oct 31 09:28:48 myhost connmand[1223]: vnet0 {newlink} index 6 operstate 0 <UNKNOWN>
Oct 31 09:28:48 myhost connmand[1223]: vnet0 {newlink} index 6 address FE:54:00:A0:AC:92 mtu 1500
Oct 31 09:28:48 myhost connmand[1223]: vnet0 {newlink} index 6 operstate 0 <UNKNOWN>
Oct 31 09:28:50 myhost avahi-daemon[1220]: Joining mDNS multicast group on interface vnet0.IPv6 with address fe80::fc54:ff:fea0:ac92.
Oct 31 09:28:50 myhost avahi-daemon[1220]: New relevant interface vnet0.IPv6 for mDNS.
Oct 31 09:28:50 myhost avahi-daemon[1220]: Registering new address record for fe80::fc54:ff:fea0:ac92 on vnet0.*.
Oct 31 09:28:50 myhost kernel: [  521.411396] virbr0: port 1(vnet0) entered learning state
Oct 31 09:28:50 myhost connmand[1223]: vnet0 {newlink} index 6 address FE:54:00:A0:AC:92 mtu 1500
Oct 31 09:28:50 myhost connmand[1223]: vnet0 {newlink} index 6 operstate 0 <UNKNOWN>
Oct 31 09:28:52 myhost connmand[1223]: vnet0 {newlink} index 6 address FE:54:00:A0:AC:92 mtu 1500
Oct 31 09:28:52 myhost connmand[1223]: vnet0 {newlink} index 6 operstate 0 <UNKNOWN>
Oct 31 09:28:52 myhost connmand[1223]: virbr0 {update} flags 69699 <UP,RUNNING,LOWER_UP>
Oct 31 09:28:52 myhost connmand[1223]: virbr0 {newlink} index 5 address 52:54:00:CA:96:BD mtu 1500
Oct 31 09:28:52 myhost connmand[1223]: virbr0 {newlink} index 5 operstate 6 <UP>
Oct 31 09:28:52 myhost kernel: [  523.427132] virbr0: port 1(vnet0) entered forwarding state
Oct 31 09:28:52 myhost kernel: [  523.427136] virbr0: topology change detected, propagating
Oct 31 09:28:55 myhost connmand[1223]: vnet0 {RX} 0 packets 0 bytes
Oct 31 09:28:55 myhost connmand[1223]: vnet0 {TX} 1 packets 590 bytes
Oct 31 09:28:55 myhost connmand[1223]: vnet0 {newlink} index 6 address FE:54:00:A0:AC:92 mtu 1500
Oct 31 09:28:55 myhost connmand[1223]: vnet0 {newlink} index 6 operstate 0 <UNKNOWN>
Oct 31 09:28:55 myhost connmand[1223]: vnet0 {RX} 0 packets 0 bytes
Oct 31 09:28:55 myhost connmand[1223]: vnet0 {TX} 1 packets 590 bytes
Oct 31 09:28:55 myhost connmand[1223]: vnet0 {newlink} index 6 address FE:54:00:A0:AC:92 mtu 1500
Oct 31 09:28:55 myhost connmand[1223]: vnet0 {newlink} index 6 operstate 0 <UNKNOWN>
Oct 31 09:28:55 myhost connmand[1223]: vnet0 {RX} 0 packets 0 bytes
Oct 31 09:28:55 myhost connmand[1223]: vnet0 {TX} 1 packets 590 bytes
Oct 31 09:28:55 myhost connmand[1223]: vnet0 {newlink} index 6 address FE:54:00:A0:AC:92 mtu 1500
Oct 31 09:28:55 myhost connmand[1223]: vnet0 {newlink} index 6 operstate 0 <UNKNOWN>
Oct 31 09:28:57 myhost dnsmasq-dhcp[2932]: DHCPREQUEST(virbr0) 192.168.122.208 52:54:00:a0:ac:92 
Oct 31 09:28:57 myhost dnsmasq-dhcp[2932]: DHCPACK(virbr0) 192.168.122.208 52:54:00:a0:ac:92 goingmerry
Oct 31 09:29:28 myhost avahi-daemon[1220]: Joining mDNS multicast group on interface vnet0.IPv4 with address 169.254.254.122.
Oct 31 09:29:28 myhost avahi-daemon[1220]: New relevant interface vnet0.IPv4 for mDNS.
Oct 31 09:29:28 myhost avahi-daemon[1220]: Registering new address record for 169.254.254.122 on vnet0.IPv4.
Oct 31 09:29:28 myhost connmand[1223]: vnet0 {add} address 169.254.254.122/16 label vnet0 family 2
Oct 31 09:29:28 myhost connmand[1223]: vnet0 {add} route 169.254.0.0 gw 0.0.0.0 scope 253 <LINK>
Oct 31 09:29:28 myhost connmand[1223]: vnet0 {add} route 0.0.0.0 gw 0.0.0.0 scope 253 <LINK>

가상 머신을 종료합니다.

KVM 게스트를 종료하면 호스트의 연결이 복원됩니다.

$ ping www.google.com
                             
PING www.google.com (142.250.186.100) 56(84) bytes of data.
From serenity.local (169.254.254.122) icmp_seq=1 Destination Host Unreachable
[...snip...]
From serenity.local (169.254.254.122) icmp_seq=53 Destination Host Unreachable
From serenity.local (169.254.254.122) icmp_seq=54 Destination Host Unreachable
From serenity.local (169.254.254.122) icmp_seq=55 Destination Host Unreachable
64 bytes from fra24s06-in-f4.1e100.net (142.250.186.100): icmp_seq=57 ttl=119 time=12.6 ms
64 bytes from fra24s06-in-f4.1e100.net (142.250.186.100): icmp_seq=58 ttl=119 time=12.4 ms
64 bytes from fra24s06-in-f4.1e100.net (142.250.186.100): icmp_seq=59 ttl=119 time=12.3 ms
64 bytes from fra24s06-in-f4.1e100.net (142.250.186.100): icmp_seq=60 ttl=119 time=12.5 ms

# tail /var/log/syslog

Oct 31 09:53:05 myhost avahi-daemon[1220]: Interface vnet0.IPv6 no longer relevant for mDNS.
Oct 31 09:53:05 myhost kernel: [ 1976.540921] virbr0: port 1(vnet0) entered disabled state
Oct 31 09:53:05 myhost kernel: [ 1976.541608] device vnet0 left promiscuous mode
Oct 31 09:53:05 myhost kernel: [ 1976.541616] virbr0: port 1(vnet0) entered disabled state
Oct 31 09:53:05 myhost avahi-daemon[1220]: Leaving mDNS multicast group on interface vnet0.IPv6 with address fe80::fc54:ff:fea0:ac92.
Oct 31 09:53:05 myhost connmand[1223]: vnet0 {RX} 176 packets 28758 bytes
Oct 31 09:53:05 myhost connmand[1223]: vnet0 {TX} 1332 packets 162018 bytes
Oct 31 09:53:05 myhost connmand[1223]: vnet0 {update} flags 4098 <DOWN>
Oct 31 09:53:05 myhost connmand[1223]: vnet0 {newlink} index 6 address FE:54:00:A0:AC:92 mtu 1500
Oct 31 09:53:05 myhost connmand[1223]: vnet0 {newlink} index 6 operstate 2 <DOWN>
Oct 31 09:53:05 myhost avahi-daemon[1220]: Interface vnet0.IPv4 no longer relevant for mDNS.
Oct 31 09:53:05 myhost avahi-daemon[1220]: Leaving mDNS multicast group on interface vnet0.IPv4 with address 169.254.254.122.
Oct 31 09:53:05 myhost avahi-daemon[1220]: Withdrawing address record for fe80::fc54:ff:fea0:ac92 on vnet0.
Oct 31 09:53:05 myhost avahi-daemon[1220]: Withdrawing address record for 169.254.254.122 on vnet0.
Oct 31 09:53:05 myhost connmand[1223]: Removing default interface route failed (No such device)
Oct 31 09:53:05 myhost connmand[1223]: Removing default interface route failed (No such device)
Oct 31 09:53:05 myhost connmand[1223]: Removing default interface route failed (No such device)
Oct 31 09:53:05 myhost avahi-daemon[1220]: Withdrawing address record for ::1 on lo.
Oct 31 09:53:05 myhost avahi-daemon[1220]: Leaving mDNS multicast group on interface lo.IPv6 with address ::1.
Oct 31 09:53:05 myhost avahi-daemon[1220]: Interface lo.IPv6 no longer relevant for mDNS.
Oct 31 09:53:05 myhost avahi-daemon[1220]: Withdrawing address record for fe80::6d9:f5ff:fe7d:c265 on enp5s0.
Oct 31 09:53:05 myhost avahi-daemon[1220]: Leaving mDNS multicast group on interface enp5s0.IPv6 with address fe80::6d9:f5ff:fe7d:c265.
Oct 31 09:53:05 myhost avahi-daemon[1220]: Interface enp5s0.IPv6 no longer relevant for mDNS.
Oct 31 09:53:05 myhost avahi-daemon[1220]: Joining mDNS multicast group on interface lo.IPv6 with address ::1.
Oct 31 09:53:05 myhost avahi-daemon[1220]: New relevant interface lo.IPv6 for mDNS.
Oct 31 09:53:05 myhost avahi-daemon[1220]: Registering new address record for ::1 on lo.*.
Oct 31 09:53:05 myhost connmand[1223]: (null) {del} route fe80:: gw :: scope 0 <UNIVERSE>
Oct 31 09:53:05 myhost connmand[1223]: vnet0 {newlink} index 6 address FE:54:00:A0:AC:92 mtu 1500
Oct 31 09:53:05 myhost connmand[1223]: vnet0 {newlink} index 6 operstate 2 <DOWN>
Oct 31 09:53:05 myhost connmand[1223]: (null) {del} address 169.254.254.122/16 label vnet0
Oct 31 09:53:05 myhost connmand[1223]: vnet0 {newlink} index 6 address FE:54:00:A0:AC:92 mtu 1500
Oct 31 09:53:05 myhost connmand[1223]: vnet0 {newlink} index 6 operstate 2 <DOWN>
Oct 31 09:53:05 myhost connmand[1223]: vnet0 {dellink} index 6 operstate 2 <DOWN>
Oct 31 09:53:05 myhost connmand[1223]: (null) {remove} index 6
Oct 31 09:53:05 myhost connmand[1223]: Remove interface (null) [ ethernet ]
Oct 31 09:53:05 myhost connmand[1223]: virbr0 {RX} 176 packets 26294 bytes
Oct 31 09:53:05 myhost connmand[1223]: virbr0 {TX} 165 packets 47346 bytes
Oct 31 09:53:05 myhost connmand[1223]: virbr0 {update} flags 4163 <UP,RUNNING>
Oct 31 09:53:05 myhost connmand[1223]: virbr0 {newlink} index 5 address 52:54:00:CA:96:BD mtu 1500
Oct 31 09:53:05 myhost connmand[1223]: virbr0 {newlink} index 5 operstate 6 <UP>
Oct 31 09:53:05 myhost connmand[1223]: vnet0 {dellink} index 6 operstate 2 <DOWN>
Oct 31 09:53:05 myhost connmand[1223]: virbr0 {RX} 176 packets 26294 bytes
Oct 31 09:53:05 myhost connmand[1223]: virbr0 {TX} 165 packets 47346 bytes
Oct 31 09:53:05 myhost connmand[1223]: virbr0 {update} flags 4099 <UP>
Oct 31 09:53:05 myhost connmand[1223]: virbr0 {newlink} index 5 address 52:54:00:CA:96:BD mtu 1500
Oct 31 09:53:05 myhost connmand[1223]: virbr0 {newlink} index 5 operstate 2 <DOWN>
Oct 31 09:53:05 myhost connmand[1223]: enp5s0 {del} route fe80:: gw :: scope 0 <UNIVERSE>
Oct 31 09:53:05 myhost connmand[1223]: enp5s0 {add} route fe80:: gw :: scope 0 <UNIVERSE>
Oct 31 09:53:05 myhost systemd[1]: machine-qemu\x2d1\x2dgoingmerry.scope: Succeeded.
Oct 31 09:53:05 myhost systemd[1]: machine-qemu\x2d1\x2dgoingmerry.scope: Consumed 1min 29.000s CPU time.
Oct 31 09:53:05 myhost kernel: [ 1976.813274] audit: type=1400 audit(1667206385.703:20): apparmor="STATUS" operation="profile_remove" profile="unconfined" name="libvirt-24a0099b-399b-4737-b766-6c64a25c18f7" pid=3352 comm="apparmor_parser"
Oct 31 09:53:06 myhost avahi-daemon[1220]: Joining mDNS multicast group on interface enp5s0.IPv6 with address fe80::6d9:f5ff:fe7d:c265.
Oct 31 09:53:06 myhost avahi-daemon[1220]: New relevant interface enp5s0.IPv6 for mDNS.
Oct 31 09:53:06 myhost avahi-daemon[1220]: Registering new address record for fe80::6d9:f5ff:fe7d:c265 on enp5s0.*.

나는 여기서 완전히 헤매고 있으며 무슨 일이 일어나고 있는지, 어떻게 해결해야할지 전혀 모릅니다. 어떤 도움이라도 대단히 감사하겠습니다.

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