[Bug 240106] VNET issue with ARP and routing sockets in jails

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=240106

Peter Eriksson <pen@lysator.liu.se> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |pen@lysator.liu.se

--- Comment #17 from Peter Eriksson <pen@lysator.liu.se> ---
I'm seeing the same (or similar issue) on 12.3-RELEASE-p5 when trying to bridge
a vlan interface into a jail:


# egrep 'ifconfig|cloned' rc.conf
ifconfig_ixl0="up"
ifconfig_ixl2="up"
cloned_interfaces="lagg0 vlan1601 bridge0"
ifconfig_lagg0="laggproto lacp laggport ixl0 laggport ixl2 130.236.8.40 netmask
255.255.255.224 lacp_fast_timeout"
ifconfig_lagg0_ipv6="inet6 2001:6b0:17:2400::8:40/64 lacp_fast_timeout"
ifconfig_vlan1601="vlandev lagg0 vlan 1601 up"
ifconfig_bridge0="addm vlan1601 up"


# ifconfig bridge0
bridge0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
        ether 02:90:7b:7b:f5:00
        id 00:00:00:00:00:00 priority 32768 hellotime 2 fwddelay 15
        maxage 20 holdcnt 6 proto rstp maxaddr 2000 timeout 1200
        root id 00:00:00:00:00:00 priority 32768 ifcost 0 port 0
        member: vnet0.1 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
                ifmaxaddr 0 port 14 priority 128 path cost 2000
        member: lagg0 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
                ifmaxaddr 0 port 10 priority 128 path cost 1000
        member: vlan1601 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
                ifmaxaddr 0 port 11 priority 128 path cost 2000000
        groups: bridge
        nd6 options=9<PERFORMNUD,IFDISABLED>



root@filur00:/etc # iocage console test
Last login: Thu Apr 21 14:27:18 on pts/0
FreeBSD 12.3-RELEASE-p5 GENERIC --
...
root@test:~ # ping 130.236.8.65
PING 130.236.8.65 (130.236.8.65): 56 data bytes
^C
--- 130.236.8.65 ping statistics ---
2 packets transmitted, 0 packets received, 100.0% packet loss


If I now manually remove the "lagg0" member from the bridge0 interface then
things start to work fine. It would be nice if it didn't add it automatically
:-)


root@filur00:/etc # ifconfig bridge0 deletem lagg0

root@filur00:/etc # iocage console test
Last login: Thu Apr 21 14:38:34 on pts/0
FreeBSD 12.3-RELEASE-p5 GENERIC 
....
root@test:~ # ping 130.236.8.65
PING 130.236.8.65 (130.236.8.65): 56 data bytes
64 bytes from 130.236.8.65: icmp_seq=0 ttl=255 time=0.249 ms
^C
--- 130.236.8.65 ping statistics ---
1 packets transmitted, 1 packets received, 0.0% packet loss
round-trip min/avg/max/stddev = 0.249/0.249/0.249/0.000 ms

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