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New Member
Posts: 15
Registered: ‎06-12-2018
Kudos: 2

no IPv6 on eth0

Hi, 

 

I'm slowly trying to get into the world of IPv6 and still learning about it. After googling around i think i found proper settings that give me IPv6 which seems to be working as my machine is getting IPv6 address and according to https://test-ipv6.com/, I'm getting score 10/10.

 

But what supprises me is that while LAN eth1 has IPv6, my WAN eth0 does not

 

> show interfaces
Codes: S - State, L - Link, u - Up, D - Down, A - Admin Down
Interface    IP Address                        S/L  Description                 
---------    ----------                        ---  -----------                 
eth0         172.218.xxx.xxx/22                 u/u                              
eth1         10.0.1.1/24                       u/u  mynetwork                     
             2001:569:xxxx:xxxx::1/64         

My settings:

 interfaces {
     ethernet eth0 {
         address dhcp
         dhcpv6-pd {
             pd 0 {
                 interface eth1 {
                     host-address ::1
                     prefix-id :1
                     service slaac
                 }
                 prefix-length 56
             }
             rapid-commit enable
         }
         duplex auto
         firewall {
             in {
                 ipv6-name WAN6_IN
                 name WAN_IN
             }
             local {
                 ipv6-name WAN6_LOCAL
                 name WAN_LOCAL
             }
         }
         ipv6 {
             dup-addr-detect-transmits 1
             router-advert {
                 managed-flag true
             }
         }
         speed auto
     }
     ethernet eth1 {
         address 10.0.1.1/24
         description mynetwork
         duplex auto
         ipv6 {
             dup-addr-detect-transmits 1
             router-advert {
                 cur-hop-limit 64
                 link-mtu 0
                 managed-flag false
                 max-interval 600
                 other-config-flag false
                 prefix ::/64 {
                     autonomous-flag true
                     on-link-flag true
                     valid-lifetime 2592000
                 }
                 reachable-time 0
                 retrans-timer 0
                 send-advert true
             }
         }
         speed auto
         vif 10 {
             address 10.0.5.1/24
             description vifnetwork
             mtu 1500
         }
     }

 

Member
Posts: 288
Registered: ‎01-10-2016
Kudos: 53
Solutions: 25

Re: no IPv6 on eth0

Your eth0 interface has a link-local IPv6 address, even though it is not displayed there, and that is sufficient for routing of IPv6 traffic to and from your ISP.

New Member
Posts: 15
Registered: ‎06-12-2018
Kudos: 2

Re: no IPv6 on eth0

Yeah, looks like it's sufficient as it works but is that normal ? I've seen other people screenshots and they do have IPv6 next to the WAN and LAN at the same time hence my confusion here.

I have still a lot of reading regarding this topic Man Happy Thanks!

Member
Posts: 288
Registered: ‎01-10-2016
Kudos: 53
Solutions: 25

Re: no IPv6 on eth0

There are many ways to transport IPv6 between routers, and they are all 'normal'. There are advantages and disadvantages to each mode, but they tend to be minor.

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