https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=246629
Bug ID: 246629
Summary: Multicast stack problem - MRT_ADD_VIF Address already
in use
Product: Base System
Version: 12.1-STABLE
Hardware: Any
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: kern
Assignee: b...@freebsd.org
Reporter: ozkan.ki...@gmail.com
Hello,
I'm using FreeBSD 12.1-STABLE.
# uname -a
FreeBSD test.test.com 12.1-STABLE FreeBSD 12.1-STABLE #8 1f999e39f46(v2)-dirty:
Wed Apr 22 08:40:36 +03 2020
t...@test.test.com:/usr/obj/usr/src/amd64.amd64/sys/amd64
After restarting multicast routing daemon, daemon can't start with this error:
"Failed adding VIF 1 (MRT_ADD_VIF) for iface em1: Address already in use". pimd
tries to disable all vifs from kernel (shown in output below) but still throws
the same error.
I tried with both mrouted and pimd. Both of them shows same behavior.
My opinion is kernel doesn't disable VIFs.
I opened a bug report for netstat -g also ( bug #246626 ), I think there is
corruption about the multicast stack in the kernel.
There is no problem on FreeBSD 11.2.
To reproduce error:
# pimd
# killall pimd
# pimd -d -s debug
debug level 0xffffffff
(dvmrp_detail,dvmrp_prunes,dvmrp_routes,dvmrp_neighbors,dvmrp_timers,igmp_proto,igmp_timers,igmp_members,trace,timeout,packets,interfaces,kernel,cache,rsrr,pim_detail,pim_hello,pim_register,pim_join_prune,pim_bootstrap,pim_asserts,pim_cand_rp,pim_routes,pim_timers,pim_rpf)
11:52:23.035 pimd version 2.3.2 starting ...
11:52:23.035 Got 262144 byte send buffer size in 0 iterations
11:52:23.035 Got 262144 byte recv buffer size in 0 iterations
11:52:23.035 Got 262144 byte send buffer size in 0 iterations
11:52:23.035 Got 262144 byte recv buffer size in 0 iterations
11:52:23.035 Getting vifs from kernel
11:52:23.035 Installing em0 (10.2.4.20 on subnet 10.2.4/24) as vif #0 - rate 0
11:52:23.035 Installing em1 (192.168.58.1 on subnet 192.168.58) as vif #1 -
rate 0
11:52:23.035 Installing em2 (192.168.59.1 on subnet 192.168.59) as vif #2 -
rate 0
11:52:23.035 Installing em1.1600 (192.168.16.1 on subnet 192.168.16) as vif #3
- rate 0
11:52:23.035 Installing em1.1700 (192.168.17.1 on subnet 192.168.17) as vif #4
- rate 0
11:52:23.035 Disabling all vifs from kernel
11:52:23.035 Getting vifs from /usr/local/etc//pimd.conf
11:52:23.035 Local Cand-BSR address 192.168.59.1, priority 5
11:52:23.035 Local Cand-RP address 192.168.59.1, priority 20, interval 30 sec
11:52:23.035 spt-threshold packets 0 interval 100
11:52:23.035 Local static RP: 169.254.0.1, group 232.0.0.0/8
11:52:23.035 IGMP query interval : 12 sec
11:52:23.035 IGMP querier timeout : 41 sec
11:52:23.035 **Failed adding VIF 1 (MRT_ADD_VIF) for iface em1: Address already
in use**
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