Public bug reported:
With following setup:
<...>
2: ens192: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group
default qlen 1000
link/ether 00:50:56:86:31:a8 brd ff:ff:ff:ff:ff:ff
inet 10.245.40.80/18 brd 10.245.63.255 scope global ens192
valid_lft forever preferred_lft forever
inet6 fe80::250:56ff:fe86:31a8/64 scope link
valid_lft forever preferred_lft forever
<...>
4: fan-254: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1450 qdisc noqueue state UP
group default qlen 1000
link/ether 8a:f3:53:e5:11:37 brd ff:ff:ff:ff:ff:ff
inet 254.161.64.1/8 scope global fan-254
valid_lft forever preferred_lft forever
inet6 fe80::88f3:53ff:fee5:1137/64 scope link
valid_lft forever preferred_lft forever
5: ftun0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1450 qdisc noqueue master
fan-254 state UNKNOWN group default qlen 1000
link/ether 8a:f3:53:e5:11:37 brd ff:ff:ff:ff:ff:ff
inet6 fe80::88f3:53ff:fee5:1137/64 scope link
valid_lft forever preferred_lft forever
Doing ifdown ens192; ifup ens192 results in an error:
# ifdown ens192; echo $?; ifup ens192; echo $?
Killed old client process
<... isc-dhcp stuff ...>
0
<... isc-dhcp stuff ...>
/usr/sbin/fanctl: fan-254: already configured
/usr/sbin/fanctl: /etc/network/fan:40 10.245.0.0/18 254.0.0.0/8 -- failed err=1
run-parts: /etc/network/if-up.d/ubuntu-fan exited with return code 1
Failed to bring up ens192.
1
** Affects: ubuntu-fan (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1744296
Title:
After ifdown on underlay interface ifup fails with 'already
configured'
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