dhcpcd-discuss

Roy Marples (2017-05-23 12:59+0100):
> Pity. Let's try and resolve it before I go on holiday.

No pressure from me.  I can work around this problem if necessary by 
using wide-dhcpv6.  But I'd love to have all DHCP client things handled 
in one tool.

> (...)

> add debug command to dhcpcd.conf
> and send wirehark captures (or tcpdump that wireshark can read) of the
> DHCPv6 messages please.
>
> dhcpcd is likely correct that there are no useable IA's and did the
> right thing, but clearly it's not applying them to the needed interface.
> I'll work on a patch try and get more information about this issue as well.

Here's the log:

#v+
debug: May 23 12:32:53 [22824]: dhcpcd-7.0.0-rc1 starting
debug: May 23 12:32:53 [22824]: udev: starting
info: May 23 12:32:53 [22824]: dev: loaded udev
debug: May 23 12:32:53 [22824]: enp1s0: executing `/usr/libexec/dhcpcd-run-hooks' PREINIT
debug: May 23 12:32:53 [22824]: enp1s0: executing `/usr/libexec/dhcpcd-run-hooks' CARRIER
debug: May 23 12:32:53 [22824]: enp2s0: executing `/usr/libexec/dhcpcd-run-hooks' PREINIT
debug: May 23 12:32:53 [22824]: enp2s0: executing `/usr/libexec/dhcpcd-run-hooks' CARRIER
debug: May 23 12:32:53 [22824]: enp3s0: executing `/usr/libexec/dhcpcd-run-hooks' PREINIT
debug: May 23 12:32:53 [22824]: enp3s0: executing `/usr/libexec/dhcpcd-run-hooks' CARRIER
info: May 23 12:32:53 [22824]: DUID 00:01:00:01:20:b1:c0:37:00:0d:b9:40:82:48
info: May 23 12:32:53 [22824]: enp1s0: IAID b9:40:82:48
info: May 23 12:32:53 [22824]: enp1s0: IAID 00:00:00:00
debug: May 23 12:32:53 [22824]: enp1s0: delaying IPv6 router solicitation for 0.7 seconds
debug: May 23 12:32:53 [22824]: enp1s0: reading lease `/var/db/dhcpcd/enp1s0.lease6'
info: May 23 12:32:53 [22824]: enp1s0: accepted reconfigure key
info: May 23 12:32:53 [22824]: enp1s0: rebinding prior DHCPv6 lease
debug: May 23 12:32:53 [22824]: enp1s0: delaying REBIND6 (xid 0xb804ea), next in 0.2 seconds
debug: May 23 12:32:53 [22824]: enp1s0: delaying IPv4 for 0.2 seconds
info: May 23 12:32:53 [22824]: enp2s0: IAID b9:40:82:49
info: May 23 12:32:53 [22824]: enp2s0: using static address 192.168.13.1/24
debug: May 23 12:32:53 [22824]: enp2s0: IP address 192.168.13.1/24 already exists
info: May 23 12:32:53 [22824]: enp2s0: adding route to 192.168.13.0/24
debug: May 23 12:32:53 [22824]: enp2s0: ARP announcing 192.168.13.1 (1 of 2), next in 2.0 seconds
debug: May 23 12:32:53 [22824]: enp2s0: executing `/usr/libexec/dhcpcd-run-hooks' STATIC
info: May 23 12:32:53 [22824]: enp3s0: IAID b9:40:82:4a
info: May 23 12:32:53 [22824]: enp3s0: using static address 192.168.5.1/24
debug: May 23 12:32:53 [22824]: enp3s0: IP address 192.168.5.1/24 already exists
info: May 23 12:32:53 [22824]: enp3s0: adding route to 192.168.5.0/24
debug: May 23 12:32:53 [22824]: enp3s0: ARP announcing 192.168.5.1 (1 of 2), next in 2.0 seconds
debug: May 23 12:32:53 [22824]: enp3s0: executing `/usr/libexec/dhcpcd-run-hooks' STATIC
debug: May 23 12:32:53 [22824]: enp1s0: broadcasting REBIND6 (xid 0xb804ea), next in 0.9 seconds
debug: May 23 12:32:53 [22824]: enp1s0: reading lease `/var/db/dhcpcd/enp1s0.lease'
info: May 23 12:32:53 [22824]: enp1s0: rebinding lease of 212.51.143.146
debug: May 23 12:32:53 [22824]: enp1s0: sending REQUEST (xid 0x29c3741d), next in 4.7 seconds
debug: May 23 12:32:53 [22824]: enp1s0: acknowledged 212.51.143.146 from 213.144.129.5 `carnica.init7.net'
info: May 23 12:32:53 [22824]: enp1s0: leased 212.51.143.146 for 1686 seconds
debug: May 23 12:32:53 [22824]: enp1s0: renew in 843 seconds, rebind in 1475 seconds
debug: May 23 12:32:53 [22824]: enp1s0: writing lease `/var/db/dhcpcd/enp1s0.lease'
debug: May 23 12:32:53 [22824]: enp1s0: IP address 212.51.143.146/24 already exists
info: May 23 12:32:53 [22824]: enp1s0: adding route to 212.51.143.0/24
info: May 23 12:32:53 [22824]: enp1s0: adding default route via 212.51.143.1
debug: May 23 12:32:53 [22824]: enp1s0: ARP announcing 212.51.143.146 (1 of 2), next in 2.0 seconds
debug: May 23 12:32:53 [22824]: enp1s0: executing `/usr/libexec/dhcpcd-run-hooks' BOUND
warn: May 23 12:32:53 [22824]: enp1s0: fe80::1edf:fff:feb6:967f: DHCPv6 REPLY missing Prefix
err: May 23 12:32:53 [22824]: enp1s0: no useable IA found in lease
info: May 23 12:32:53 [22824]: enp1s0: soliciting a DHCPv6 lease
debug: May 23 12:32:53 [22824]: enp1s0: delaying SOLICIT6 (xid 0x3f1f39), next in 0.4 seconds
debug: May 23 12:32:53 [22824]: enp1s0: wrong xid 0xb804ea (expecting 0x3f1f39) from fe80::1edf:fff:feb6:967f
info: May 23 12:32:53 [22824]: enp1s0: soliciting an IPv6 router
debug: May 23 12:32:53 [22824]: enp1s0: sending Router Solicitation
info: May 23 12:32:53 [22824]: enp1s0: Router Advertisement from fe80::1edf:fff:feb6:967f
info: May 23 12:32:53 [22824]: enp1s0: adding address 2a02:168:2000:e:1bb7:71cc:3092:230d/64
debug: May 23 12:32:53 [22824]: enp1s0: pltime 604800 seconds, vltime 2592000 seconds
info: May 23 12:32:53 [22824]: enp1s0: adding route to 2a02:168:2000:e::/64
info: May 23 12:32:53 [22824]: enp1s0: adding default route via fe80::1edf:fff:feb6:967f
debug: May 23 12:32:53 [22824]: enp1s0: executing `/usr/libexec/dhcpcd-run-hooks' ROUTERADVERT
debug: May 23 12:32:53 [22824]: enp1s0: No DHCPv6 instruction in RA
debug: May 23 12:32:53 [22824]: enp1s0: broadcasting SOLICIT6 (xid 0x3f1f39), next in 1.1 seconds
info: May 23 12:32:53 [22824]: enp1s0: ADV 2a02:168:5cc6::/48 from fe80::1edf:fff:feb6:967f
debug: May 23 12:32:53 [22824]: enp1s0: broadcasting REQUEST6 (xid 0x8c0ae9), next in 0.9 seconds
debug: May 23 12:32:53 [22824]: enp1s0: wrong xid 0x3f1f39 (expecting 0x8c0ae9) from fe80::1edf:fff:feb6:967f
info: May 23 12:32:53 [22824]: enp1s0: accepted reconfigure key
info: May 23 12:32:53 [22824]: enp1s0: REPLY6 received from fe80::1edf:fff:feb6:967f
info: May 23 12:32:53 [22824]: enp1s0: renew in 1200, rebind in 1800, expire in 86400 seconds
info: May 23 12:32:53 [22824]: lo: adding reject route to 2a02:168:5cc6::/48
debug: May 23 12:32:53 [22824]: enp1s0: writing lease `/var/db/dhcpcd/enp1s0.lease6'
info: May 23 12:32:53 [22824]: enp1s0: delegated prefix 2a02:168:5cc6::/48
info: May 23 12:32:53 [22824]: enp2s0: adding address 2a02:168:5cc6:d::1/64
debug: May 23 12:32:53 [22824]: enp2s0: pltime 3600 seconds, vltime 86400 seconds
info: May 23 12:32:53 [22824]: enp2s0: adding route to 2a02:168:5cc6:d::/64
debug: May 23 12:32:53 [22824]: enp2s0: executing `/usr/libexec/dhcpcd-run-hooks' DELEGATED6
info: May 23 12:32:53 [22824]: enp3s0: adding address 2a02:168:5cc6:5::1/64
debug: May 23 12:32:53 [22824]: enp3s0: pltime 3600 seconds, vltime 86400 seconds
info: May 23 12:32:53 [22824]: enp3s0: adding route to 2a02:168:5cc6:5::/64
debug: May 23 12:32:54 [22824]: enp3s0: waiting for DHCPv6 DAD to complete
debug: May 23 12:32:54 [22824]: enp1s0: executing `/usr/libexec/dhcpcd-run-hooks' BOUND6
debug: May 23 12:32:55 [22824]: enp2s0: ARP announcing 192.168.13.1 (2 of 2)
debug: May 23 12:32:55 [22824]: enp3s0: ARP announcing 192.168.5.1 (2 of 2)
debug: May 23 12:32:55 [22824]: enp1s0: ARP announcing 212.51.143.146 (2 of 2)
debug: May 23 12:32:55 [22824]: enp3s0: DHCPv6 DAD completed
debug: May 23 12:32:55 [22824]: enp3s0: executing `/usr/libexec/dhcpcd-run-hooks' DELEGATED6
debug: May 23 12:35:40 [22824]: enp1s0: Router Advertisement from fe80::1edf:fff:feb6:967f
debug: May 23 12:35:40 [22824]: enp1s0: adding address 2a02:168:2000:e:1bb7:71cc:3092:230d/64
debug: May 23 12:35:40 [22824]: enp1s0: pltime 604800 seconds, vltime 2592000 seconds
debug: May 23 12:35:40 [22824]: enp1s0: executing `/usr/libexec/dhcpcd-run-hooks' ROUTERADVERT
debug: May 23 12:38:39 [22824]: enp1s0: Router Advertisement from fe80::1edf:fff:feb6:967f
debug: May 23 12:38:39 [22824]: enp1s0: adding address 2a02:168:2000:e:1bb7:71cc:3092:230d/64
debug: May 23 12:38:39 [22824]: enp1s0: pltime 604800 seconds, vltime 2592000 seconds
debug: May 23 12:38:39 [22824]: enp1s0: executing `/usr/libexec/dhcpcd-run-hooks' ROUTERADVERT
debug: May 23 12:41:14 [22824]: enp1s0: Router Advertisement from fe80::1edf:fff:feb6:967f
debug: May 23 12:41:14 [22824]: enp1s0: adding address 2a02:168:2000:e:1bb7:71cc:3092:230d/64
debug: May 23 12:41:14 [22824]: enp1s0: pltime 604800 seconds, vltime 2592000 seconds
debug: May 23 12:41:14 [22824]: enp1s0: executing `/usr/libexec/dhcpcd-run-hooks' ROUTERADVERT
debug: May 23 12:43:24 [22824]: enp1s0: Router Advertisement from fe80::1edf:fff:feb6:967f
debug: May 23 12:43:24 [22824]: enp1s0: adding address 2a02:168:2000:e:1bb7:71cc:3092:230d/64
debug: May 23 12:43:24 [22824]: enp1s0: pltime 604800 seconds, vltime 2592000 seconds
debug: May 23 12:43:24 [22824]: enp1s0: executing `/usr/libexec/dhcpcd-run-hooks' ROUTERADVERT
debug: May 23 12:43:27 [22824]: enp1s0: Router Advertisement from fe80::1edf:fff:feb6:967f
debug: May 23 12:43:27 [22824]: enp1s0: adding address 2a02:168:2000:e:1bb7:71cc:3092:230d/64
debug: May 23 12:43:27 [22824]: enp1s0: pltime 604800 seconds, vltime 2592000 seconds
debug: May 23 12:43:27 [22824]: enp1s0: executing `/usr/libexec/dhcpcd-run-hooks' ROUTERADVERT
debug: May 23 12:43:30 [22824]: enp1s0: Router Advertisement from fe80::1edf:fff:feb6:967f
debug: May 23 12:43:30 [22824]: enp1s0: adding address 2a02:168:2000:e:1bb7:71cc:3092:230d/64
debug: May 23 12:43:30 [22824]: enp1s0: pltime 604800 seconds, vltime 2592000 seconds
debug: May 23 12:43:30 [22824]: enp1s0: executing `/usr/libexec/dhcpcd-run-hooks' ROUTERADVERT
debug: May 23 12:43:36 [22824]: enp1s0: Router Advertisement from fe80::1edf:fff:feb6:967f
debug: May 23 12:43:36 [22824]: enp1s0: adding address 2a02:168:2000:e:1bb7:71cc:3092:230d/64
debug: May 23 12:43:36 [22824]: enp1s0: pltime 604800 seconds, vltime 2592000 seconds
debug: May 23 12:43:36 [22824]: enp1s0: executing `/usr/libexec/dhcpcd-run-hooks' ROUTERADVERT
debug: May 23 12:46:39 [22824]: enp1s0: Router Advertisement from fe80::1edf:fff:feb6:967f
debug: May 23 12:46:39 [22824]: enp1s0: adding address 2a02:168:2000:e:1bb7:71cc:3092:230d/64
debug: May 23 12:46:39 [22824]: enp1s0: pltime 604800 seconds, vltime 2592000 seconds
debug: May 23 12:46:39 [22824]: enp1s0: executing `/usr/libexec/dhcpcd-run-hooks' ROUTERADVERT
debug: May 23 12:46:56 [22824]: enp1s0: renewing lease of 212.51.143.146
debug: May 23 12:46:56 [22824]: enp1s0: sending REQUEST (xid 0xcbb92ca9), next in 4.6 seconds
debug: May 23 12:46:56 [22824]: enp1s0: acknowledged 212.51.143.146 from 213.144.129.5 `carnica.init7.net'
debug: May 23 12:46:56 [22824]: enp1s0: leased 212.51.143.146 for 1800 seconds
debug: May 23 12:46:56 [22824]: enp1s0: renew in 900 seconds, rebind in 1575 seconds
debug: May 23 12:46:56 [22824]: enp1s0: writing lease `/var/db/dhcpcd/enp1s0.lease'
debug: May 23 12:46:56 [22824]: enp1s0: IP address 212.51.143.146/24 already exists
debug: May 23 12:46:56 [22824]: enp1s0: ARP announcing 212.51.143.146 (1 of 2), next in 2.0 seconds
debug: May 23 12:46:56 [22824]: enp1s0: executing `/usr/libexec/dhcpcd-run-hooks' RENEW
debug: May 23 12:46:58 [22824]: enp1s0: ARP announcing 212.51.143.146 (2 of 2)
debug: May 23 12:49:45 [22824]: enp1s0: Router Advertisement from fe80::1edf:fff:feb6:967f
debug: May 23 12:49:45 [22824]: enp1s0: adding address 2a02:168:2000:e:1bb7:71cc:3092:230d/64
debug: May 23 12:49:45 [22824]: enp1s0: pltime 604800 seconds, vltime 2592000 seconds
debug: May 23 12:49:45 [22824]: enp1s0: executing `/usr/libexec/dhcpcd-run-hooks' ROUTERADVERT
debug: May 23 12:50:36 [22824]: enp1s0: Router Advertisement from fe80::1edf:fff:feb6:967f
debug: May 23 12:50:36 [22824]: enp1s0: adding address 2a02:168:2000:e:1bb7:71cc:3092:230d/64
debug: May 23 12:50:36 [22824]: enp1s0: pltime 604800 seconds, vltime 2592000 seconds
debug: May 23 12:50:36 [22824]: enp1s0: executing `/usr/libexec/dhcpcd-run-hooks' ROUTERADVERT
debug: May 23 12:52:53 [22824]: enp1s0: unicasting RENEW6 (xid 0xdacceb), next in 10.6 seconds
debug: May 23 12:53:04 [22824]: enp1s0: unicasting RENEW6 (xid 0xdacceb), next in 20.2 seconds
debug: May 23 12:53:24 [22824]: enp1s0: unicasting RENEW6 (xid 0xdacceb), next in 40.3 seconds
debug: May 23 12:53:37 [22824]: enp1s0: Router Advertisement from fe80::1edf:fff:feb6:967f
debug: May 23 12:53:37 [22824]: enp1s0: adding address 2a02:168:2000:e:1bb7:71cc:3092:230d/64
debug: May 23 12:53:37 [22824]: enp1s0: pltime 604800 seconds, vltime 2592000 seconds
info: May 23 12:53:37 [22824]: lo: deleting reject route to 2a02:168:5cc6::/48
debug: May 23 12:53:37 [22824]: enp1s0: executing `/usr/libexec/dhcpcd-run-hooks' ROUTERADVERT
debug: May 23 12:54:05 [22824]: enp1s0: unicasting RENEW6 (xid 0xdacceb), next in 83.8 seconds
debug: May 23 12:55:28 [22824]: enp1s0: unicasting RENEW6 (xid 0xdacceb), next in 159.3 seconds
debug: May 23 12:56:32 [22824]: enp1s0: Router Advertisement from fe80::1edf:fff:feb6:967f
debug: May 23 12:56:32 [22824]: enp1s0: adding address 2a02:168:2000:e:1bb7:71cc:3092:230d/64
debug: May 23 12:56:32 [22824]: enp1s0: pltime 604800 seconds, vltime 2592000 seconds
debug: May 23 12:56:32 [22824]: enp1s0: executing `/usr/libexec/dhcpcd-run-hooks' ROUTERADVERT
debug: May 23 12:58:08 [22824]: enp1s0: unicasting RENEW6 (xid 0xdacceb), next in 306.8 seconds
debug: May 23 12:58:24 [22824]: enp1s0: Router Advertisement from fe80::1edf:fff:feb6:967f
debug: May 23 12:58:24 [22824]: enp1s0: adding address 2a02:168:2000:e:1bb7:71cc:3092:230d/64
debug: May 23 12:58:24 [22824]: enp1s0: pltime 604800 seconds, vltime 2592000 seconds
debug: May 23 12:58:24 [22824]: enp1s0: executing `/usr/libexec/dhcpcd-run-hooks' ROUTERADVERT
debug: May 23 12:58:27 [22824]: enp1s0: Router Advertisement from fe80::1edf:fff:feb6:967f
debug: May 23 12:58:27 [22824]: enp1s0: adding address 2a02:168:2000:e:1bb7:71cc:3092:230d/64
debug: May 23 12:58:27 [22824]: enp1s0: pltime 604800 seconds, vltime 2592000 seconds
debug: May 23 12:58:27 [22824]: enp1s0: executing `/usr/libexec/dhcpcd-run-hooks' ROUTERADVERT
debug: May 23 12:58:30 [22824]: enp1s0: Router Advertisement from fe80::1edf:fff:feb6:967f
debug: May 23 12:58:30 [22824]: enp1s0: adding address 2a02:168:2000:e:1bb7:71cc:3092:230d/64
debug: May 23 12:58:30 [22824]: enp1s0: pltime 604800 seconds, vltime 2592000 seconds
debug: May 23 12:58:30 [22824]: enp1s0: executing `/usr/libexec/dhcpcd-run-hooks' ROUTERADVERT
debug: May 23 12:58:36 [22824]: enp1s0: Router Advertisement from fe80::1edf:fff:feb6:967f
debug: May 23 12:58:36 [22824]: enp1s0: adding address 2a02:168:2000:e:1bb7:71cc:3092:230d/64
debug: May 23 12:58:36 [22824]: enp1s0: pltime 604800 seconds, vltime 2592000 seconds
debug: May 23 12:58:36 [22824]: enp1s0: executing `/usr/libexec/dhcpcd-run-hooks' ROUTERADVERT
debug: May 23 13:01:25 [22824]: enp1s0: Router Advertisement from fe80::1edf:fff:feb6:967f
debug: May 23 13:01:25 [22824]: enp1s0: adding address 2a02:168:2000:e:1bb7:71cc:3092:230d/64
debug: May 23 13:01:25 [22824]: enp1s0: pltime 604800 seconds, vltime 2592000 seconds
debug: May 23 13:01:25 [22824]: enp1s0: executing `/usr/libexec/dhcpcd-run-hooks' ROUTERADVERT
debug: May 23 13:01:56 [22824]: enp1s0: renewing lease of 212.51.143.146
debug: May 23 13:01:56 [22824]: enp1s0: sending REQUEST (xid 0xe1fd4e1f), next in 4.7 seconds
debug: May 23 13:01:56 [22824]: enp1s0: acknowledged 212.51.143.146 from 213.144.129.5 `carnica.init7.net'
debug: May 23 13:01:56 [22824]: enp1s0: leased 212.51.143.146 for 1800 seconds
debug: May 23 13:01:56 [22824]: enp1s0: renew in 900 seconds, rebind in 1575 seconds
debug: May 23 13:01:56 [22824]: enp1s0: writing lease `/var/db/dhcpcd/enp1s0.lease'
debug: May 23 13:01:56 [22824]: enp1s0: IP address 212.51.143.146/24 already exists
debug: May 23 13:01:56 [22824]: enp1s0: ARP announcing 212.51.143.146 (1 of 2), next in 2.0 seconds
debug: May 23 13:01:56 [22824]: enp1s0: executing `/usr/libexec/dhcpcd-run-hooks' RENEW
debug: May 23 13:01:58 [22824]: enp1s0: ARP announcing 212.51.143.146 (2 of 2)
warn: May 23 13:02:53 [22824]: enp1s0: failed to renew DHCPv6, rebinding
debug: May 23 13:02:53 [22824]: enp1s0: delaying REBIND6 (xid 0x635d00), next in 0.5 seconds
debug: May 23 13:02:54 [22824]: enp1s0: broadcasting REBIND6 (xid 0x635d00), next in 0.9 seconds
warn: May 23 13:02:54 [22824]: enp1s0: fe80::1edf:fff:feb6:967f: DHCPv6 REPLY missing Prefix
err: May 23 13:02:54 [22824]: enp1s0: no useable IA found in lease
info: May 23 13:02:54 [22824]: enp2s0: deleting address 2a02:168:5cc6:d::1/64
info: May 23 13:02:54 [22824]: enp2s0: deleting route to 2a02:168:5cc6:d::/64
info: May 23 13:02:54 [22824]: enp3s0: deleting address 2a02:168:5cc6:5::1/64
info: May 23 13:02:54 [22824]: enp3s0: deleting route to 2a02:168:5cc6:5::/64
info: May 23 13:02:54 [22824]: enp1s0: soliciting a DHCPv6 lease
debug: May 23 13:02:54 [22824]: enp1s0: delaying SOLICIT6 (xid 0xfb18a2), next in 0.0 seconds
debug: May 23 13:02:54 [22824]: enp1s0: broadcasting SOLICIT6 (xid 0xfb18a2), next in 0.9 seconds
info: May 23 13:02:54 [22824]: enp1s0: ADV 2a02:168:5cf3::/48 from fe80::1edf:fff:feb6:967f
debug: May 23 13:02:54 [22824]: enp1s0: broadcasting REQUEST6 (xid 0xe08c63), next in 0.9 seconds
debug: May 23 13:02:54 [22824]: enp1s0: wrong xid 0x635d00 (expecting 0xe08c63) from fe80::1edf:fff:feb6:967f
debug: May 23 13:02:54 [22824]: enp1s0: wrong xid 0xfb18a2 (expecting 0xe08c63) from fe80::1edf:fff:feb6:967f
info: May 23 13:02:54 [22824]: enp1s0: accepted reconfigure key
info: May 23 13:02:54 [22824]: enp1s0: REPLY6 received from fe80::1edf:fff:feb6:967f
info: May 23 13:02:54 [22824]: enp1s0: renew in 1200, rebind in 1800, expire in 86400 seconds
info: May 23 13:02:54 [22824]: lo: adding reject route to 2a02:168:5cf3::/48
debug: May 23 13:02:54 [22824]: enp1s0: writing lease `/var/db/dhcpcd/enp1s0.lease6'
info: May 23 13:02:54 [22824]: enp1s0: delegated prefix 2a02:168:5cf3::/48
info: May 23 13:02:54 [22824]: enp2s0: adding address 2a02:168:5cf3:d::1/64
debug: May 23 13:02:54 [22824]: enp2s0: pltime 3600 seconds, vltime 86400 seconds
info: May 23 13:02:54 [22824]: enp2s0: adding route to 2a02:168:5cf3:d::/64
debug: May 23 13:02:54 [22824]: enp2s0: waiting for DHCPv6 DAD to complete
debug: May 23 13:02:54 [22824]: enp1s0: executing `/usr/libexec/dhcpcd-run-hooks' BOUND6
debug: May 23 13:02:56 [22824]: enp2s0: DHCPv6 DAD completed
debug: May 23 13:02:56 [22824]: enp2s0: executing `/usr/libexec/dhcpcd-run-hooks' DELEGATED6
#v-

And the capture I made with
tcpdump -i enp1s0 'port 546 or port 547' -w /tmp/dhcpv6.pcap
is attached.

David

Attachment: dhcpv6.pcap
Description: application/vnd.tcpdump.pcap