IP address on eth1 is assigned through dhcpv6 and a /64 passed to eth3. This is the only interface where dhcpv6 is active. Initially the ipv6 addresses display in "show interfaces" but after a few hours, disappears. The network still works as expected.
me@gw01# show interfaces ethernet eth0 { address dhcp description VZ firewall { in { name OUTSIDE-IN } local { name OUTSIDE-LOCAL } out { name OUTSIDE-OUT } } traffic-policy { out VZFiOSOut } } ethernet eth1 { address dhcp address dhcpv6 description SpectrumTWC dhcpv6-options { pd 0 { interface eth3 { sla-id 0 } length 56 } } firewall { in { ipv6-name OUTSIDE-6-IN name OUTSIDE-IN } local { ipv6-name OUTSIDE-6-LOCAL name OUTSIDE-LOCAL } out { ipv6-name OUTSIDE-6-OUT name OUTSIDE-OUT } } traffic-policy { out SpectrumOut } } ethernet eth2 { address dhcp description NaturalWireless firewall { in { name OUTSIDE-IN } local { name OUTSIDE-LOCAL } out { name OUTSIDE-OUT } } traffic-policy { out NWOut } } ethernet eth3 { address 172.18.50.1/24 description NetworkTest ipv6 { address { autoconf } } } ethernet eth4 { address 10.0.0.1/16 address fc00::1/64 description LAN firewall { in { name LAN-IN } out { } } ipv6 { address { autoconf } } policy { route LAN-Policy route6 LAN-Policy } }
after a reboot, everything displays as expected:
Interface IP Address S/L Description --------- ---------- --- ----------- eth0 xxx.xxx.126.54/24 u/u VZ eth1 xxx.xxx.176.177/20 u/u SpectrumTWC ** 2001:xxxx:xxxx:xxxx:xxxx:6c52:39d1:a695/128 ** eth2 xxx.xxx.179.69/24 u/u NaturalWireless eth3 xxx.xxx.50.1/24 u/u NetworkTest fc00::2:3eec:efff:fe01:a24f/64 2001:xxxx:xxxx:xxxx:xxxx:efff:fe01:a24f/64 eth4 xxx.xxx.0.1/16 u/u LAN fc00::42a6:b7ff:fe20:4df8/64 fc00::1/64
but after awhile, the public ipv6 address for eth1 is no longer displayed. additionally, the public /64 prefix is no longer visible on eth3.
Interface IP Address S/L Description --------- ---------- --- ----------- eth0 x.x.x.x/24 u/u VZ eth1 y.y.y.y/20 u/u SpectrumTWC eth2 10.12.0.221/22 u/u NaturalWireless eth3 172.18.50.1/24 u/u NetworkTest fc00::2:3eec:efff:fe01:a24f/64 eth4 10.0.0.1/16 u/u LAN fc00::42a6:b7ff:fe20:4df8/64 fc00::1/64
me@gw01:~$ ping6 google.com PING google.com(lga15s49-in-x0e.1e100.net (2607:f8b0:4006:80d::200e)) 56 data bytes 64 bytes from lga15s49-in-x0e.1e100.net (2607:f8b0:4006:80d::200e): icmp_seq=1 ttl=118 time=9.74 ms 64 bytes from lga15s49-in-x0e.1e100.net (2607:f8b0:4006:80d::200e): icmp_seq=2 ttl=118 time=13.5 ms 64 bytes from lga15s49-in-x0e.1e100.net (2607:f8b0:4006:80d::200e): icmp_seq=3 ttl=118 time=15.1 ms 64 bytes from lga15s49-in-x0e.1e100.net (2607:f8b0:4006:80d::200e): icmp_seq=4 ttl=118 time=11.5 ms