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While running an Ubuntu kernel (not a mainline or third-party kernel)
please enter the following command in a terminal window:
apport-collect 1986987
and then change the status of the bug to 'Confirmed'.
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This change has been made by an automated script, maintained by the
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** Changed in: linux (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1986987
Title:
network interface down/up removes local lookup table from routing
policy db
Status in linux package in Ubuntu:
Incomplete
Bug description:
Hi, the IRC guys suggested to file a bug here with 'linux'.
# cat /proc/version_signature
Ubuntu 5.15.0-46.49-generic 5.15.39
Description: Ubuntu 22.04.1 LTS
Release: 22.04
I'm not able to attach the lspci output - but it's happening on various
hardware flavors (intel i350 nic, mellanox connectx-6, xeon/epyc cpu's, etc) so
it doesn't look hardware related. If you want to know something hardware
specific let me know.
$ ip rule show
100: from all lookup local
32766: from all lookup main
32767: from all lookup default
$ ping localhost -c3
PING localhost (127.0.0.1) 56(84) bytes of data.
64 bytes from localhost (127.0.0.1): icmp_seq=1 ttl=64 time=0.044 ms
64 bytes from localhost (127.0.0.1): icmp_seq=2 ttl=64 time=0.050 ms
64 bytes from localhost (127.0.0.1): icmp_seq=3 ttl=64 time=0.050 ms
--- localhost ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2040ms
rtt min/avg/max/mdev = 0.044/0.048/0.050/0.003 ms
$ ip link set dev eno1 down
$ ip link set dev eno1 up
$ ip rule show
32766: from all lookup main
32767: from all lookup default
====> NO LOCAL
$ ping localhost -c3
PING localhost (127.0.0.1) 56(84) bytes of data.
--- localhost ping statistics ---
3 packets transmitted, 0 received, 100% packet loss, time 2051ms
$ ip rule add from all lookup local pref 100
$ ip rule show
100: from all lookup local
32766: from all lookup main
32767: from all lookup default
$ ping localhost -c3
PING localhost (127.0.0.1) 56(84) bytes of data.
64 bytes from localhost (127.0.0.1): icmp_seq=1 ttl=64 time=0.066 ms
64 bytes from localhost (127.0.0.1): icmp_seq=2 ttl=64 time=0.054 ms
64 bytes from localhost (127.0.0.1): icmp_seq=3 ttl=64 time=0.050 ms
--- localhost ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2024ms
rtt min/avg/max/mdev = 0.050/0.056/0.066/0.006 ms
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