[Bug 281391] IPv6 multicast sent to wrong MAC address
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Date: Fri, 20 Sep 2024 21:42:02 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=281391
antonfb@hesiod.org changed:
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Attachment #253704|text/x-c++src |text/plain
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--- Comment #3 from antonfb@hesiod.org ---
Created attachment 253704
--> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=253704&action=edit
test case program
My test program attached.
NOTE: You need to modify it with your /64 address in the location with a
comment.
Here's some of my truss output with concurrent runs on 13.4 and 14.1
the 14.1 machine... (command "hive foo" i.e. one argument to cause ipv6
case...)
NOTE this receives the multicast messages...
socket(PF_INET6,SOCK_DGRAM,0) = 3 (0x3)
bind(3,{ AF_INET6 [::]:3412 },28) = 0 (0x0)
setsockopt(3,IPPROTO_IPV6,IPV6_MULTICAST_HOPS,0x8209f444c,4) = 0 (0x0)
setsockopt(3,IPPROTO_IPV6,IPV6_MULTICAST_LOOP,0x8209f444c,4) = 0 (0x0)
setsockopt(3,IPPROTO_IPV6,IPV6_JOIN_GROUP,0x8209f4438,20) = 0 (0x0)
sendmsg(3,{{ AF_INET6 [ff34:40:2001:5a8:60c8:1e00:2:1]:3412 },28,[{"This is a
test",14}],1,{},0,0},0) = 14 (0xe)
select(4,{ 3 },0x0,0x0,{ 4.999998 }) = 1 (0x1)
recvfrom(3,"This is a test",200,0,{ AF_INET6
[2001:5a8:60c8:1e00:8647:9ff:fe2e:141a]:3412 },0x8209f433c) = 14 (0xe)
fstat(1,{ mode=crw--w---- ,inode=379,size=0,blksize=4096 }) = 0 (0x0)
ioctl(1,TIOCGETA,0x8209f3ac4) = 0 (0x0)
2001:5a8:60c8:1e00:8647:9ff:fe2e:141a 3412 This is a test
write(1,"2001:5a8:60c8:1e00:8647:9ff:fe2e"...,58) = 58 (0x3a)
select(4,{ 3 },0x0,0x0,{ 4.678515 }) = 0 (0x0)
sendmsg(3,{{ AF_INET6 [ff34:40:2001:5a8:60c8:1e00:2:1]:3412 },28,[{"This is a
test",14}],1,{},0,0},0) = 14 (0xe)
The 13.4 machine...
same command run, one argument to cause ipv6
NOTE this does not receive messages from the 14.1 machine
socket(PF_INET6,SOCK_DGRAM,0) = 3 (0x3)
bind(3,{ AF_INET6 [::]:3412 },28) = 0 (0x0)
setsockopt(3,IPPROTO_IPV6,IPV6_MULTICAST_HOPS,0x820ada4dc,4) = 0 (0x0)
setsockopt(3,IPPROTO_IPV6,IPV6_MULTICAST_LOOP,0x820ada4dc,4) = 0 (0x0)
setsockopt(3,IPPROTO_IPV6,IPV6_JOIN_GROUP,0x820ada4c8,20) = 0 (0x0)
sendmsg(3,{{ AF_INET6 [ff34:40:2001:5a8:60c8:1e00:2:1]:3412 },28,[{"This is a
test",14}],1,{},0,0},0) = 14 (0xe)
select(4,{ 3 },0x0,0x0,{ 5.000000 }) = 0 (0x0)
sendmsg(3,{{ AF_INET6 [ff34:40:2001:5a8:60c8:1e00:2:1]:3412 },28,[{"This is a
test",14}],1,{},0,0},0) = 14 (0xe)
select(4,{ 3 },0x0,0x0,{ 4.999999 }) = 0 (0x0)
sendmsg(3,{{ AF_INET6 [ff34:40:2001:5a8:60c8:1e00:2:1]:3412 },28,[{"This is a
test",14}],1,{},0,0},0) = 14 (0xe)
select(4,{ 3 },0x0,0x0,{ 4.999999 }) = 0 (0x0)
sendmsg(3,{{ AF_INET6 [ff34:40:2001:5a8:60c8:1e00:2:1]:3412 },28,[{"This is a
test",14}],1,{},0,0},0) = 14 (0xe)
select(4,{ 3 },0x0,0x0,{ 4.999999 }) = 0 (0x0)
sendmsg(3,{{ AF_INET6 [ff34:40:2001:5a8:60c8:1e00:2:1]:3412 },28,[{"This is a
test",14}],1,{},0,0},0) = 14 (0xe)
select(4,{ 3 },0x0,0x0,{ 4.999999 }) = 0 (0x0)
For completeness... the ipv4 runs work.
14.1 machine...
socket(PF_INET,SOCK_DGRAM,0) = 3 (0x3)
bind(3,{ AF_INET 0.0.0.0:3412 },16) = 0 (0x0)
setsockopt(3,IPPROTO_IP,IP_MULTICAST_TTL,0x821026d5c,4) = 0 (0x0)
setsockopt(3,IPPROTO_IP,IP_MULTICAST_LOOP,0x821026d5c,4) = 0 (0x0)
setsockopt(3,IPPROTO_IP,IP_ADD_MEMBERSHIP,0x821026d48,8) = 0 (0x0)
sendmsg(3,{{ AF_INET 239.1.0.1:3412 },16,[{"This is a test",14}],1,{},0,0},0) =
14 (0xe)
select(4,{ 3 },0x0,0x0,{ 5.000000 }) = 1 (0x1)
recvfrom(3,"This is a test",200,0,{ AF_INET 192.168.2.5:3412 },0x821026c4c) =
14 (0xe)
fstat(1,{ mode=crw--w---- ,inode=379,size=0,blksize=4096 }) = 0 (0x0)
ioctl(1,TIOCGETA,0x8210263d4) = 0 (0x0)
192.168.2.5 3412 This is a test
write(1,"192.168.2.5 3412 This is a test"...,32) = 32 (0x20)
select(4,{ 3 },0x0,0x0,{ 4.998028 }) = 0 (0x0)
sendmsg(3,{{ AF_INET 239.1.0.1:3412 },16,[{"This is a test",14}],1,{},0,0},0) =
14 (0xe)
select(4,{ 3 },0x0,0x0,{ 5.000000 }) = 1 (0x1)
recvfrom(3,"This is a test",200,0,{ AF_INET 192.168.2.5:3412 },0x821026c4c) =
14 (0xe)
192.168.2.5 3412 This is a test
13.2 machine...
socket(PF_INET,SOCK_DGRAM,0) = 3 (0x3)
bind(3,{ AF_INET 0.0.0.0:3412 },16) = 0 (0x0)
setsockopt(3,IPPROTO_IP,IP_MULTICAST_TTL,0x8205725ec,4) = 0 (0x0)
setsockopt(3,IPPROTO_IP,IP_MULTICAST_LOOP,0x8205725ec,4) = 0 (0x0)
setsockopt(3,IPPROTO_IP,IP_ADD_MEMBERSHIP,0x8205725d8,8) = 0 (0x0)
sendmsg(3,{{ AF_INET 239.1.0.1:3412 },16,[{"This is a test",14}],1,{},0,0},0) =
14 (0xe)
select(4,{ 3 },0x0,0x0,{ 5.000000 }) = 0 (0x0)
sendmsg(3,{{ AF_INET 239.1.0.1:3412 },16,[{"This is a test",14}],1,{},0,0},0) =
14 (0xe)
select(4,{ 3 },0x0,0x0,{ 5.000000 }) = 0 (0x0)
sendmsg(3,{{ AF_INET 239.1.0.1:3412 },16,[{"This is a test",14}],1,{},0,0},0) =
14 (0xe)
select(4,{ 3 },0x0,0x0,{ 5.000000 }) = 1 (0x1)
recvfrom(3,"This is a test",200,0,{ AF_INET 192.168.2.3:3412 },0x8205724dc) =
14 (0xe)
fstat(1,{ mode=crw--w---- ,inode=381,size=0,blksize=4096 }) = 0 (0x0)
ioctl(1,TIOCGETA,0x820571c64) = 0 (0x0)
192.168.2.3 3412 This is a test
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