# tcpdump -vv -i re0 "udp and (port 546 or port 547)"14:13:12.428169 IP6 (hlim 1, next-header UDP (17) payload length: 105) fe80::20d:b9ff:XXXX:XXXX.dhcpv6-client > ff02::1:2.dhcpv6-server: [udp sum ok] dhcp6 solicit (xid=5c3caa (client-ID hwaddr/time type 1 time 536946256 000dXXXXXXXX) (IA_NA IAID:0 T1:0 T2:0) (elapsed-time 65535) (option-request DNS-server DNS-search-list) (IA_PD IAID:0 T1:0 T2:0 (IA_PD-prefix ::/64 pltime:4294967295 vltime:4294967295)))14:13:12.447643 IP6 (hlim 64, next-header UDP (17) payload length: 173) fe80::1.dhcpv6-server > fe80::20d:b9ff:XXXX:XXXX.dhcpv6-client: [udp sum ok] dhcp6 advertise (xid=5c3caa (client-ID hwaddr/time type 1 time 536946256 000dXXXXXXXX) (server-ID hwaddr/time type 1 time 433843048 f872eaa453c8) (IA_NA IAID:0 T1:1240 T2:1984 (IA_ADDR router.example.de pltime:2481 vltime:5181)) (IA_PD IAID:0 T1:1212 T2:1940 (IA_PD-prefix 2a02:8108:9abf:XXXX::/64 pltime:2425 vltime:5125)) (DNS-server 2a02:8100:c0:221::4:1101 2a02:8100:c0:229::4:1101))
# tcpdump -vv -i lagg0_vlan123 "udp and (port 546 or port 547)"tcpdump: listening on lagg0_vlan123, link-type EN10MB (Ethernet), capture size 262144 bytes14:13:23.034860 IP6 (flowlabel 0xe0811, hlim 1, next-header UDP (17) payload length: 44) fe80::e2ac:cbff:XXXX:XXXX.dhcpv6-client > ff02::1:2.dhcpv6-server: [udp sum ok] dhcp6 inf-req (xid=1cd689 (client-ID hwaddr/time type 1 time 496532964 e0accXXXXXXXX) (option-request DNS-server DNS-search-list) (elapsed-time 36723))