Michael Richardson <mcr%sandelman.ca@localhost> writes: > I have dual connections to two switches, and I have vlan tags: > > vr0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500 > address: 00:40:63:e2:0b:04 > media: Ethernet autoselect (100baseTX full-duplex) > status: active > vr1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500 > address: 00:40:63:e2:0a:8c > media: Ethernet autoselect (100baseTX full-duplex) > status: active > > agr0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500 > agrport: vr0, flags=0x3<COLLECTING,DISTRIBUTING> > agrport: vr1, flags=0x3<COLLECTING,DISTRIBUTING> > address: 00:40:63:e2:0b:04 > inet 123.123.99.123 netmask 0xffffffc0 broadcast 123.123.11.123 > inet6 fe80::240:63ff:fee2:b04%agr0 prefixlen 64 scopeid 0x5 > > vlan82: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1496 > vlan: 82 parent: agr0 > address: 00:40:63:e2:0b:04 > inet 11.222.33.444 netmask 0xffffffe0 broadcast 11.222.33.255 > inet6 fe80::240:63ff:fee2:b04%vlan82 prefixlen 64 scopeid 0x6 > inet6 2001:abc:efg:82::251 prefixlen 64 > > When I look at the network, I see: > > rtr3-[~] root 6 #tcpdump -v -e -i agr0 -n -p > (btw: without -p, the NetBSD-5.1-rc2 sometimes crashed) > > 15:37:02.715610 00:40:63:e2:0b:04 > 33:33:ff:00:02:54, ethertype 802.1Q > (0x8100), length 90: vlan 82, p 0, ethertype IPv6, (hlim 255, next-header: > ICMPv6 (58), length: 32) 2001:abc:efg:82::251 > ff02::1:ff00:254: [icmp6 sum > ok] ICMP6, neighbor solicitation, length 32, who has 2001:abc:efg:82::254 > source link-address option (1), length 8 (1): 00:40:63:e2:0b:04 > > 15:37:02.715925 00:24:38:ef:20:81 > 00:40:63:e2:0b:04, ethertype IPv6 > (0x86dd), length 86: (class 0xc0, hlim 255, next-header: ICMPv6 (58), length: > 32) 2001:abc:efg:82::254 > 2001:abc:efg:82::251: [icmp6 sum ok] ICMP6, > neighbor advertisement, length 32, tgt is 2001:abc:efg:82::254, Flags > [router, solicited, override] > destination link-address option (2), length 8 (1): 00:24:38:ef:20:81 So if that ifconfig -a and trace is from your box, then your machine sent a neighbor solicited on vlan82, and the ::254 machine sent you a reply on the bare ethernet - which seems wrong. I see no evidence that ::251 has misbehaved. Is ::254 your machine, and does it run NetBSD?
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