Code:
ubnt@router:~$ sudo tcpdump -vv -ni eth0 'icmp6 and (ip6[40] == 134)'
tcpdump: listening on eth0, link-type EN10MB (Ethernet), capture size 262144 bytes
19:58:49.739120 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::ff:fe00:22 > ff02::1: [icmp6 sum ok] ICMP6, router advertisement, length 32
hop limit 64, Flags [managed], pref medium, router lifetime 1800s, reachable time 0s, retrans time 0s
source link-address option (1), length 8 (1): 02:00:00:00:00:22
0x0000: 0200 0000 0022
mtu option (5), length 8 (1): 1500
0x0000: 0000 0000 05dc
19:59:18.118439 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::ff:fe00:22 > ff02::1: [icmp6 sum ok] ICMP6, router advertisement, length 32
hop limit 64, Flags [managed], pref medium, router lifetime 1800s, reachable time 0s, retrans time 0s
source link-address option (1), length 8 (1): 02:00:00:00:00:22
0x0000: 0200 0000 0022
mtu option (5), length 8 (1): 1500
0x0000: 0000 0000 05dc
19:59:35.644643 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::ff:fe00:22 > ff02::1: [icmp6 sum ok] ICMP6, router advertisement, length 32
hop limit 64, Flags [managed], pref medium, router lifetime 1800s, reachable time 0s, retrans time 0s
source link-address option (1), length 8 (1): 02:00:00:00:00:22
0x0000: 0200 0000 0022
mtu option (5), length 8 (1): 1500
0x0000: 0000 0000 05dc
19:59:43.401956 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::ff:fe00:22 > ff02::1: [icmp6 sum ok] ICMP6, router advertisement, length 32
hop limit 64, Flags [managed], pref medium, router lifetime 1800s, reachable time 0s, retrans time 0s
source link-address option (1), length 8 (1): 02:00:00:00:00:22
0x0000: 0200 0000 0022
mtu option (5), length 8 (1): 1500
0x0000: 0000 0000 05dc
19:59:53.182773 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::ff:fe00:22 > ff02::1: [icmp6 sum ok] ICMP6, router advertisement, length 32
hop limit 64, Flags [none], pref medium, router lifetime 1800s, reachable time 0s, retrans time 0s
source link-address option (1), length 8 (1): 02:00:00:00:00:22
0x0000: 0200 0000 0022
mtu option (5), length 8 (1): 1500
0x0000: 0000 0000 05dc
20:00:01.550826 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::ff:fe00:22 > ff02::1: [icmp6 sum ok] ICMP6, router advertisement, length 32
hop limit 64, Flags [managed], pref medium, router lifetime 1800s, reachable time 0s, retrans time 0s
source link-address option (1), length 8 (1): 02:00:00:00:00:22
0x0000: 0200 0000 0022
mtu option (5), length 8 (1): 1500
0x0000: 0000 0000 05dc
20:00:18.584415 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::ff:fe00:22 > ff02::1: [icmp6 sum ok] ICMP6, router advertisement, length 32
hop limit 64, Flags [managed], pref medium, router lifetime 1800s, reachable time 0s, retrans time 0s
source link-address option (1), length 8 (1): 02:00:00:00:00:22
0x0000: 0200 0000 0022
mtu option (5), length 8 (1): 1500
0x0000: 0000 0000 05dc
20:00:31.347763 IP6 (class 0xe0, hlim 255, next-header ICMPv6 (58) payload length: 32) fe80::ff:fe00:22 > ff02::1: [icmp6 sum ok] ICMP6, router advertisement, length 32
hop limit 64, Flags [managed], pref medium, router lifetime 1800s, reachable time 0s, retrans time 0s
source link-address option (1), length 8 (1): 02:00:00:00:00:22
0x0000: 0200 0000 0022
mtu option (5), length 8 (1): 1500
0x0000: 0000 0000 05dc
Ich bau jetzt die Firewallpolicy nochmal neu. Irgendwas stimmt doch hier nicht...