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
```