Hi,

I've been trying to track down the reason for intermittent PXE
failures while using DHCPv6,
the failed PXE attempts seem to correlate with incomplete dhcp6
advertise packets.

e.g. in this sequence, the advertise packet length is 62 (all of the
failed attempts I've found happened with packets of the same length)

14:11:42.843363 00:93:12:a1:39:68 > 33:33:00:01:00:02, ethertype IPv6
(0x86dd), length 116: fe80::293:12ff:fea1:3968.546 > ff02::1:2.547:
dhcp6 solicit
14:11:42.843598 52:54:00:96:ef:51 > 00:93:12:a1:39:68, ethertype IPv6
(0x86dd), length 62: fe80::5710:879f:72e4:7b41.547 >
fe80::293:12ff:fea1:3968.546: dhcp6[|dhcp6]

Compared to a successful sequence
14:11:44.843012 00:93:12:a1:39:68 > 33:33:00:01:00:02, ethertype IPv6
(0x86dd), length 116: fe80::293:12ff:fea1:3968.546 > ff02::1:2.547:
dhcp6 solicit
14:11:44.843247 52:54:00:96:ef:51 > 00:93:12:a1:39:68, ethertype IPv6
(0x86dd), length 168: fe80::5710:879f:72e4:7b41.547 >
fe80::293:12ff:fea1:3968.546: dhcp6 advertise

I've attached 3 files, the first is my dnsmasq config file, the second
is my dnsmasq logs and the 3 is a tcpdump of the DHCPv6 traffic while
3 hosts were PXE booting one succeeded and the other 2 failed in the
way described above

I'm using dnsmasq-2.76-10.el7_7.1 on CentOS 7.7.1908 running in a container

I've also tried with the most recent version of dnsmasq
(2.80-93-g6ebdc95), and also get strange looking packets
(msgtype-134??), eg
10:40:43.204829 00:39:a6:0a:33:99 > 33:33:00:01:00:02, ethertype IPv6
(0x86dd), length 223: fe80::239:a6ff:fe0a:3399.546 > ff02::1:2.547:
dhcp6 request
10:40:43.206361 52:54:00:02:9a:11 > 00:39:a6:0a:33:99, ethertype IPv6
(0x86dd), length 126: fe80::5325:ca30:6ccd:c83.547 >
fe80::239:a6ff:fe0a:3399.546: dhcp6 msgtype-134
vs.
10:40:43.213256 00:39:a6:0a:33:95 > 33:33:00:01:00:02, ethertype IPv6
(0x86dd), length 223: fe80::239:a6ff:fe0a:3395.546 > ff02::1:2.547:
dhcp6 request
10:40:43.219308 52:54:00:02:9a:11 > 00:39:a6:0a:33:95, ethertype IPv6
(0x86dd), length 210: fe80::5325:ca30:6ccd:c83.547 >
fe80::239:a6ff:fe0a:3395.546: dhcp6 reply

but these only appear to happen after iPXE has chain loaded and also
sometimes stalls the boot process, I guess depending on when they
happen.

any help in finding the problem (or a solution) would be appreciated.

thanks,
Derek.

Attachment: dnsmasq.conf
Description: Binary data

Waiting for ens4 interface to be configured
dnsmasq: started, version 2.76 DNS disabled
dnsmasq: compile time options: IPv6 GNU-getopt DBus no-i18n IDN DHCP DHCPv6 no-Lua TFTP no-conntrack ipset auth no-DNSSEC loop-detect inotify
dnsmasq-dhcp: DHCPv6, IP range fd2e:6f44:5dd8:b856::1:1 -- fd2e:6f44:5dd8:b856::1:ffff, lease time 1h
dnsmasq-dhcp: router advertisement on fd2e:6f44:5dd8:b856::
dnsmasq-dhcp: IPv6 router advertisement enabled
dnsmasq-dhcp: DHCP, sockets bound exclusively to interface ens4
dnsmasq-dhcp: RTR-ADVERT(ens4) fd2e:6f44:5dd8:b856::
dnsmasq-dhcp: RTR-ADVERT(ens4) fd2e:6f44:5dd8:b856::
dnsmasq-dhcp: RTR-ADVERT(ens4) fd2e:6f44:5dd8:b856::
dnsmasq-dhcp: RTR-ADVERT(ens4) fd2e:6f44:5dd8:b856::
dnsmasq-dhcp: RTR-ADVERT(ens4) fd2e:6f44:5dd8:b856::
dnsmasq-dhcp: RTR-ADVERT(ens4) fd2e:6f44:5dd8:b856::
dnsmasq-dhcp: RTR-ADVERT(ens4) fd2e:6f44:5dd8:b856::
dnsmasq-dhcp: RTR-ADVERT(ens4) fd2e:6f44:5dd8:b856::
dnsmasq-dhcp: 10167131 available DHCP range: fd2e:6f44:5dd8:b856::1:1 -- fd2e:6f44:5dd8:b856::1:ffff
dnsmasq-dhcp: 10167131 vendor class: 343
dnsmasq-dhcp: 10167131 client MAC address: 00:93:12:a1:39:64
dnsmasq-dhcp: 10167131 DHCPSOLICIT(ens4) 00:04:f6:5d:ab:fd:a2:28:f8:4e:9d:e2:07:06:02:12:31:bd 
dnsmasq-dhcp: 10167131 DHCPADVERTISE(ens4) fd2e:6f44:5dd8:b856::1:b5c4 00:04:f6:5d:ab:fd:a2:28:f8:4e:9d:e2:07:06:02:12:31:bd 
dnsmasq-dhcp: 10167131 requested options: 59:bootfile-url, 60:bootfile-param, 23:dns-server, 
dnsmasq-dhcp: 10167131 requested options: 16:vendor-class
dnsmasq-dhcp: 10167131 tags: pxe6, dhcpv6, ens4
dnsmasq-dhcp: 10167131 sent size: 18 option:  1 client-id  00:04:f6:5d:ab:fd:a2:28:f8:4e:9d:e2:07:06...
dnsmasq-dhcp: 10167131 sent size: 14 option:  2 server-id  00:01:00:01:25:73:ce:5b:52:54:00:5e:0c:d2
dnsmasq-dhcp: 10167131 sent size: 40 option:  3 ia-na  IAID=2771646265 T1=1800 T2=3150
dnsmasq-dhcp: 
dnsmasq-dhcp: 10167131 sent size:  9 option: 13 status  0 success
dnsmasq-dhcp: 10167131 sent size:  1 option:  7 preference  0
dnsmasq-dhcp: 10167131 sent size: 43 option: 59 bootfile-url  tftp://[fd2e:6f44:5dd8:b856::2]/snponly.efi
dnsmasq-dhcp: 553505 available DHCP range: fd2e:6f44:5dd8:b856::1:1 -- fd2e:6f44:5dd8:b856::1:ffff
dnsmasq-dhcp: 553505 vendor class: 343
dnsmasq-dhcp: 553505 client MAC address: 00:93:12:a1:39:6c
dnsmasq-dhcp: 553505 DHCPSOLICIT(ens4) 00:04:94:ec:f1:83:7e:c7:a8:48:a9:6d:a5:d4:f1:d2:bc:9f 
dnsmasq-dhcp: 553505 DHCPADVERTISE(ens4) fd2e:6f44:5dd8:b856::1:5883 00:04:94:ec:f1:83:7e:c7:a8:48:a9:6d:a5:d4:f1:d2:bc:9f 
dnsmasq-dhcp: 553505 requested options: 59:bootfile-url, 60:bootfile-param, 23:dns-server, 
dnsmasq-dhcp: 553505 requested options: 16:vendor-class
dnsmasq-dhcp: 553505 tags: pxe6, dhcpv6, ens4
dnsmasq-dhcp: 553505 sent size: 18 option:  1 client-id  00:04:94:ec:f1:83:7e:c7:a8:48:a9:6d:a5:d4...
dnsmasq-dhcp: 553505 sent size: 14 option:  2 server-id  00:01:00:01:25:73:ce:5b:52:54:00:5e:0c:d2
dnsmasq-dhcp: 553505 sent size: 40 option:  3 ia-na  IAID=3891789693 T1=1800 T2=3150
dnsmasq-dhcp: 553505 nest size: 24 option:  5 iaaddr  fd2e:6f44:5dd8:b856::1:5883 PL=3600 VL=3600
dnsmasq-dhcp: 553505 sent size:  9 option: 13 status  0 success
dnsmasq-dhcp: 553505 sent size:  1 option:  7 preference  0
dnsmasq-dhcp: 553505 sent size: 43 option: 59 bootfile-url  tftp://[fd2e:6f44:5dd8:b856::2]/snponly.efi
dnsmasq-dhcp: RTR-SOLICIT(ens4) 
dnsmasq-dhcp: RTR-ADVERT(ens4) fd2e:6f44:5dd8:b856::
dnsmasq-dhcp: 619041 available DHCP range: fd2e:6f44:5dd8:b856::1:1 -- fd2e:6f44:5dd8:b856::1:ffff
dnsmasq-dhcp: 619041 client MAC address: 00:93:12:a1:39:6c
dnsmasq-dhcp: 619041 DHCPSOLICIT(ens4) 00:04:94:ec:f1:83:7e:c7:a8:48:a9:6d:a5:d4:f1:d2:bc:9f 
dnsmasq-dhcp: 619041 DHCPADVERTISE(ens4) fd2e:6f44:5dd8:b856::1:5a01 00:04:94:ec:f1:83:7e:c7:a8:48:a9:6d:a5:d4:f1:d2:bc:9f 
dnsmasq-dhcp: 619041 requested options: 23:dns-server
dnsmasq-dhcp: 619041 tags: dhcpv6, ens4
dnsmasq-dhcp: 619041 sent size: 18 option:  1 client-id  00:04:94:ec:f1:83:7e:c7:a8:48:a9:6d:a5:d4...
dnsmasq-dhcp: 619041 sent size: 14 option:  2 server-id  00:01:00:01:25:73:ce:5b:52:54:00:5e:0c:d2
dnsmasq-dhcp: 619041 sent size: 40 option:  3 ia-na  IAID=2874408831 T1=1800 T2=3150
dnsmasq-dhcp: 619041 nest size: 24 option:  5 iaaddr  fd2e:6f44:5dd8:b856::1:5a01 PL=3600 VL=3600
dnsmasq-dhcp: 619041 sent size:  9 option: 13 status  0 success
dnsmasq-dhcp: 619041 sent size:  1 option:  7 preference  0
dnsmasq-dhcp: RTR-ADVERT(ens4) fd2e:6f44:5dd8:b856::
dnsmasq-dhcp: 10232667 available DHCP range: fd2e:6f44:5dd8:b856::1:1 -- fd2e:6f44:5dd8:b856::1:ffff
dnsmasq-dhcp: 10232667 client MAC address: 00:93:12:a1:39:64
dnsmasq-dhcp: 10232667 DHCPSOLICIT(ens4) 00:04:f6:5d:ab:fd:a2:28:f8:4e:9d:e2:07:06:02:12:31:bd 
dnsmasq-dhcp: 10232667 DHCPADVERTISE(ens4) fd2e:6f44:5dd8:b856::1:2c27 00:04:f6:5d:ab:fd:a2:28:f8:4e:9d:e2:07:06:02:12:31:bd 
dnsmasq-dhcp: 10232667 requested options: 23:dns-server
dnsmasq-dhcp: 10232667 tags: dhcpv6, ens4
dnsmasq-dhcp: 10232667 sent size: 18 option:  1 client-id  00:04:f6:5d:ab:fd:a2:28:f8:4e:9d:e2:07:06...
dnsmasq-dhcp: 10232667 sent size: 14 option:  2 server-id  00:01:00:01:25:73:ce:5b:52:54:00:5e:0c:d2
dnsmasq-dhcp: 10232667 sent size: 40 option:  3 ia-na  IAID=3977967613 T1=1800 T2=3150
dnsmasq-dhcp: 10232667 nest size: 24 option:  5 iaaddr  fd2e:6f44:5dd8:b856::1:2c27 PL=3600 VL=3600
dnsmasq-dhcp: 10232667 sent size:  9 option: 13 status  0 success
dnsmasq-dhcp: 10232667 sent size:  1 option:  7 preference  0
dnsmasq-dhcp: 10298203 available DHCP range: fd2e:6f44:5dd8:b856::1:1 -- fd2e:6f44:5dd8:b856::1:ffff
dnsmasq-dhcp: 10298203 client MAC address: 00:93:12:a1:39:64
dnsmasq-dhcp: 10298203 DHCPREQUEST(ens4) 00:04:f6:5d:ab:fd:a2:28:f8:4e:9d:e2:07:06:02:12:31:bd 
dnsmasq-dhcp: 10298203 DHCPREPLY(ens4) fd2e:6f44:5dd8:b856::1:2c27 00:04:f6:5d:ab:fd:a2:28:f8:4e:9d:e2:07:06:02:12:31:bd 
dnsmasq-dhcp: 10298203 requested options: 23:dns-server
dnsmasq-dhcp: 10298203 tags: dhcpv6, ens4
dnsmasq-dhcp: 10298203 sent size: 18 option:  1 client-id  00:04:f6:5d:ab:fd:a2:28:f8:4e:9d:e2:07:06...
dnsmasq-dhcp: 10298203 sent size: 14 option:  2 server-id  00:01:00:01:25:73:ce:5b:52:54:00:5e:0c:d2
dnsmasq-dhcp: 10298203 sent size: 40 option:  3 ia-na  IAID=3977967613 T1=1800 T2=3150
dnsmasq-dhcp: 10298203 nest size: 24 option:  5 iaaddr  fd2e:6f44:5dd8:b856::1:2c27 PL=3600 VL=3600
dnsmasq-dhcp: 
dnsmasq-dhcp: 619041 available DHCP range: fd2e:6f44:5dd8:b856::1:1 -- fd2e:6f44:5dd8:b856::1:ffff
dnsmasq-dhcp: 619041 client MAC address: 00:93:12:a1:39:6c
dnsmasq-dhcp: 619041 DHCPSOLICIT(ens4) 00:04:94:ec:f1:83:7e:c7:a8:48:a9:6d:a5:d4:f1:d2:bc:9f 
dnsmasq-dhcp: 619041 DHCPADVERTISE(ens4) fd2e:6f44:5dd8:b856::1:5a01 00:04:94:ec:f1:83:7e:c7:a8:48:a9:6d:a5:d4:f1:d2:bc:9f 
dnsmasq-dhcp: 619041 requested options: 23:dns-server
dnsmasq-dhcp: 619041 tags: dhcpv6, ens4
dnsmasq-dhcp: 619041 sent size: 18 option:  1 client-id  00:04:94:ec:f1:83:7e:c7:a8:48:a9:6d:a5:d4...
dnsmasq-dhcp: 619041 sent size: 14 option:  2 server-id  00:01:00:01:25:73:ce:5b:52:54:00:5e:0c:d2
dnsmasq-dhcp: 619041 sent size: 40 option:  3 ia-na  IAID=2874408831 T1=1800 T2=3150
dnsmasq-dhcp: 619041 nest size: 24 option:  5 iaaddr  fd2e:6f44:5dd8:b856::1:5a01 PL=3600 VL=3600
dnsmasq-dhcp: 619041 sent size:  9 option: 13 status  0 success
dnsmasq-dhcp: 
dnsmasq-dhcp: 10363739 available DHCP range: fd2e:6f44:5dd8:b856::1:1 -- fd2e:6f44:5dd8:b856::1:ffff
dnsmasq-dhcp: 10363739 vendor class: 343
dnsmasq-dhcp: 10363739 client MAC address: 00:93:12:a1:39:64
dnsmasq-dhcp: 10363739 DHCPREQUEST(ens4) 00:04:f6:5d:ab:fd:a2:28:f8:4e:9d:e2:07:06:02:12:31:bd 
dnsmasq-dhcp: 10363739 DHCPREPLY(ens4) fd2e:6f44:5dd8:b856::1:b5c4 00:04:f6:5d:ab:fd:a2:28:f8:4e:9d:e2:07:06:02:12:31:bd 
dnsmasq-dhcp: 10363739 requested options: 59:bootfile-url, 60:bootfile-param, 23:dns-server, 
dnsmasq-dhcp: 10363739 requested options: 16:vendor-class
dnsmasq-dhcp: 10363739 tags: pxe6, dhcpv6, ens4
dnsmasq-dhcp: 10363739 sent size: 18 option:  1 client-id  00:04:f6:5d:ab:fd:a2:28:f8:4e:9d:e2:07:06...
dnsmasq-dhcp: 10363739 sent size: 14 option:  2 server-id  00:01:00:01:25:73:ce:5b:52:54:00:5e:0c:d2
dnsmasq-dhcp: 10363739 sent size: 40 option:  3 ia-na  IAID=2771646265 T1=1800 T2=3150
dnsmasq-dhcp: 10363739 nest size: 24 option:  5 iaaddr  fd2e:6f44:5dd8:b856::1:b5c4 PL=3600 VL=3600
dnsmasq-dhcp: 10363739 sent size:  9 option: 13 status  0 success
dnsmasq-dhcp: 10363739 sent size: 43 option: 59 bootfile-url  tftp://[fd2e:6f44:5dd8:b856::2]/snponly.efi
dnsmasq-dhcp: 10429275 available DHCP range: fd2e:6f44:5dd8:b856::1:1 -- fd2e:6f44:5dd8:b856::1:ffff
dnsmasq-dhcp: 10429275 client MAC address: 00:93:12:a1:39:64
dnsmasq-dhcp: 10429275 DHCPRELEASE(ens4) 00:04:f6:5d:ab:fd:a2:28:f8:4e:9d:e2:07:06:02:12:31:bd 
dnsmasq-dhcp: 10429275 tags: dhcpv6, ens4
dnsmasq-dhcp: 
dnsmasq-dhcp: 
dnsmasq-dhcp: 10429275 sent size: 18 option: 13 status  0 release received
dnsmasq-dhcp: 10494811 available DHCP range: fd2e:6f44:5dd8:b856::1:1 -- fd2e:6f44:5dd8:b856::1:ffff
dnsmasq-dhcp: 10494811 client MAC address: 00:93:12:a1:39:64
dnsmasq-dhcp: 10494811 DHCPRELEASE(ens4) 00:04:f6:5d:ab:fd:a2:28:f8:4e:9d:e2:07:06:02:12:31:bd 
dnsmasq-dhcp: 10494811 tags: dhcpv6, ens4
dnsmasq-dhcp: 10494811 sent size: 18 option:  1 client-id  00:04:f6:5d:ab:fd:a2:28:f8:4e:9d:e2:07:06...
dnsmasq-dhcp: 10494811 sent size: 14 option:  2 server-id  00:01:00:01:25:73:ce:5b:52:54:00:5e:0c:d2
dnsmasq-dhcp: 10494811 sent size: 18 option: 13 status  0 release received
dnsmasq-dhcp: RTR-SOLICIT(ens4) 00:93:12:a1:39:64
dnsmasq-dhcp: RTR-ADVERT(ens4) fd2e:6f44:5dd8:b856::
dnsmasq-dhcp: 11632822 available DHCP range: fd2e:6f44:5dd8:b856::1:1 -- fd2e:6f44:5dd8:b856::1:ffff
dnsmasq-dhcp: 11632822 vendor class: 343
dnsmasq-dhcp: 11632822 client MAC address: 00:93:12:a1:39:64
dnsmasq-dhcp: 11632822 DHCPSOLICIT(ens4) 00:04:fd:ab:5d:f6:28:a2:4e:f8:9d:e2:07:06:02:12:31:bd 
dnsmasq-dhcp: 11632822 DHCPADVERTISE(ens4) fd2e:6f44:5dd8:b856::1:e45c 00:04:fd:ab:5d:f6:28:a2:4e:f8:9d:e2:07:06:02:12:31:bd 
dnsmasq-dhcp: 
dnsmasq-dhcp: 11632822 requested options: 60:bootfile-param
dnsmasq-dhcp: 11632822 tags: pxe6, ipxe6, dhcpv6, ens4
dnsmasq-dhcp: 11632822 sent size: 18 option:  1 client-id  00:04:fd:ab:5d:f6:28:a2:4e:f8:9d:e2:07:06...
dnsmasq-dhcp: 11632822 sent size: 14 option:  2 server-id  00:01:00:01:25:73:ce:5b:52:54:00:5e:0c:d2
dnsmasq-dhcp: 11632822 sent size: 40 option:  3 ia-na  IAID=4032290168 T1=1800 T2=3150
dnsmasq-dhcp: 11632822 nest size: 24 option:  5 iaaddr  fd2e:6f44:5dd8:b856::1:e45c PL=3600 VL=3600
dnsmasq-dhcp: 11632822 sent size:  9 option: 13 status  0 success
dnsmasq-dhcp: 11632822 sent size:  1 option:  7 preference  0
dnsmasq-dhcp: 11632822 sent size: 48 option: 59 bootfile-url  http://[fd2e:6f44:5dd8:b856::2]:80/dualboot.ipxe
dnsmasq-dhcp: 11632822 available DHCP range: fd2e:6f44:5dd8:b856::1:1 -- fd2e:6f44:5dd8:b856::1:ffff
dnsmasq-dhcp: 11632822 vendor class: 343
dnsmasq-dhcp: 
dnsmasq-dhcp: 11632822 DHCPREQUEST(ens4) 00:04:fd:ab:5d:f6:28:a2:4e:f8:9d:e2:07:06:02:12:31:bd 
dnsmasq-dhcp: 11632822 DHCPREPLY(ens4) fd2e:6f44:5dd8:b856::1:e45c 00:04:fd:ab:5d:f6:28:a2:4e:f8:9d:e2:07:06:02:12:31:bd 
dnsmasq-dhcp: 11632822 requested options: 23:dns-server, 24:domain-search, 59:bootfile-url, 
dnsmasq-dhcp: 11632822 requested options: 60:bootfile-param
dnsmasq-dhcp: 11632822 tags: pxe6, ipxe6, dhcpv6, ens4
dnsmasq-dhcp: 11632822 sent size: 18 option:  1 client-id  00:04:fd:ab:5d:f6:28:a2:4e:f8:9d:e2:07:06...
dnsmasq-dhcp: 11632822 sent size: 14 option:  2 server-id  00:01:00:01:25:73:ce:5b:52:54:00:5e:0c:d2
dnsmasq-dhcp: 11632822 sent size: 40 option:  3 ia-na  IAID=4032290168 T1=1800 T2=3150
dnsmasq-dhcp: 
dnsmasq-dhcp: 
dnsmasq-dhcp: 11632822 sent size: 48 option: 59 bootfile-url  http://[fd2e:6f44:5dd8:b856::2]:80/dualboot.ipxe
dnsmasq-dhcp: 553505 available DHCP range: fd2e:6f44:5dd8:b856::1:1 -- fd2e:6f44:5dd8:b856::1:ffff
dnsmasq-dhcp: 553505 vendor class: 343
dnsmasq-dhcp: 553505 client MAC address: 00:93:12:a1:39:68
dnsmasq-dhcp: 553505 DHCPSOLICIT(ens4) 00:04:16:bd:5f:66:50:0a:1c:4a:89:d8:8a:f9:70:7c:44:6e 
dnsmasq-dhcp: 553505 DHCPADVERTISE(ens4) fd2e:6f44:5dd8:b856::1:2b4a 00:04:16:bd:5f:66:50:0a:1c:4a:89:d8:8a:f9:70:7c:44:6e 
dnsmasq-dhcp: 553505 requested options: 59:bootfile-url, 60:bootfile-param, 23:dns-server, 
dnsmasq-dhcp: 553505 requested options: 16:vendor-class
dnsmasq-dhcp: 553505 tags: pxe6, dhcpv6, ens4
dnsmasq-dhcp: 553505 sent size: 18 option:  1 client-id  00:04:16:bd:5f:66:50:0a:1c:4a:89:d8:8a:f9...
dnsmasq-dhcp: 553505 sent size: 14 option:  2 server-id  00:01:00:01:25:73:ce:5b:52:54:00:5e:0c:d2
dnsmasq-dhcp: 553505 sent size: 40 option:  3 ia-na  IAID=3891788669 T1=1800 T2=3150
dnsmasq-dhcp: 553505 nest size: 24 option:  5 iaaddr  fd2e:6f44:5dd8:b856::1:2b4a PL=3600 VL=3600
dnsmasq-dhcp: 553505 sent size:  9 option: 13 status  0 success
dnsmasq-dhcp: 553505 sent size:  1 option:  7 preference  0
dnsmasq-dhcp: 553505 sent size: 43 option: 59 bootfile-url  tftp://[fd2e:6f44:5dd8:b856::2]/snponly.efi
dnsmasq-dhcp: RTR-SOLICIT(ens4) 
dnsmasq-dhcp: RTR-ADVERT(ens4) fd2e:6f44:5dd8:b856::
dnsmasq-dhcp: 619041 available DHCP range: fd2e:6f44:5dd8:b856::1:1 -- fd2e:6f44:5dd8:b856::1:ffff
dnsmasq-dhcp: 619041 client MAC address: 00:93:12:a1:39:68
dnsmasq-dhcp: 619041 DHCPSOLICIT(ens4) 00:04:16:bd:5f:66:50:0a:1c:4a:89:d8:8a:f9:70:7c:44:6e 
dnsmasq-dhcp: 619041 DHCPADVERTISE(ens4) fd2e:6f44:5dd8:b856::1:4b5d 00:04:16:bd:5f:66:50:0a:1c:4a:89:d8:8a:f9:70:7c:44:6e 
dnsmasq-dhcp: 619041 requested options: 23:dns-server
dnsmasq-dhcp: 619041 tags: dhcpv6, ens4
dnsmasq-dhcp: 619041 sent size: 18 option:  1 client-id  00:04:16:bd:5f:66:50:0a:1c:4a:89:d8:8a:f9...
dnsmasq-dhcp: 619041 sent size: 14 option:  2 server-id  00:01:00:01:25:73:ce:5b:52:54:00:5e:0c:d2
dnsmasq-dhcp: 619041 sent size: 40 option:  3 ia-na  IAID=3977969661 T1=1800 T2=3150
dnsmasq-dhcp: 619041 nest size: 24 option:  5 iaaddr  fd2e:6f44:5dd8:b856::1:4b5d PL=3600 VL=3600
dnsmasq-dhcp: 
dnsmasq-dhcp: 619041 sent size:  1 option:  7 preference  0
dnsmasq-dhcp: RTR-ADVERT(ens4) fd2e:6f44:5dd8:b856::
dnsmasq-dhcp: 619041 available DHCP range: fd2e:6f44:5dd8:b856::1:1 -- fd2e:6f44:5dd8:b856::1:ffff
dnsmasq-dhcp: 619041 client MAC address: 00:93:12:a1:39:68
dnsmasq-dhcp: 619041 DHCPSOLICIT(ens4) 00:04:16:bd:5f:66:50:0a:1c:4a:89:d8:8a:f9:70:7c:44:6e 
dnsmasq-dhcp: 619041 DHCPADVERTISE(ens4) fd2e:6f44:5dd8:b856::1:4b5d 00:04:16:bd:5f:66:50:0a:1c:4a:89:d8:8a:f9:70:7c:44:6e 
dnsmasq-dhcp: 619041 requested options: 23:dns-server
dnsmasq-dhcp: 619041 tags: dhcpv6, ens4
dnsmasq-dhcp: 619041 sent size: 18 option:  1 client-id  00:04:16:bd:5f:66:50:0a:1c:4a:89:d8:8a:f9...
dnsmasq-dhcp: 619041 sent size: 14 option:  2 server-id  00:01:00:01:25:73:ce:5b:52:54:00:5e:0c:d2
dnsmasq-dhcp: 619041 sent size: 40 option:  3 ia-na  IAID=3977969661 T1=1800 T2=3150
dnsmasq-dhcp: 619041 nest size: 24 option:  5 iaaddr  fd2e:6f44:5dd8:b856::1:4b5d PL=3600 VL=3600
dnsmasq-dhcp: 619041 sent size:  9 option: 13 status  0 success
dnsmasq-dhcp: 619041 sent size:  1 option:  7 preference  0
dnsmasq-dhcp: RTR-ADVERT(ens4) fd2e:6f44:5dd8:b856::
dnsmasq-dhcp: RTR-ADVERT(ens4) fd2e:6f44:5dd8:b856::
dnsmasq-dhcp: RTR-ADVERT(ens4) fd2e:6f44:5dd8:b856::
dnsmasq-dhcp: RTR-ADVERT(ens4) fd2e:6f44:5dd8:b856::
dnsmasq-dhcp: RTR-ADVERT(ens4) fd2e:6f44:5dd8:b856::
dnsmasq-dhcp: RTR-ADVERT(ens4) fd2e:6f44:5dd8:b856::

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

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