Arch Linux

artiom

Member

From: France

Registered: 2008-07-29

Posts: 111

IPv6 dont have default route

I have a router sending RAs and all seems to work (even DHCPv6 which gives a custom DNS server) except the default route.
Here is my RA content:

Frame 11152: 102 bytes on wire (816 bits), 102 bytes captured (816 bits) on interface enp0s31f6, id 0
Ethernet II, Src: xxxxxxxxxxxx, Dst: IPv6mcast_01 (33:33:00:00:00:01)
Internet Protocol Version 6, Src: xxxxxxxxxxxx, Dst: ff02::1
    0110 .... = Version: 6
    .... 1100 0000 .... .... .... .... .... = Traffic Class: 0xc0 (DSCP: CS6, ECN: Not-ECT)
    .... .... .... 0000 0000 0000 0000 0000 = Flow Label: 0x00000
    Payload Length: 48
    Next Header: ICMPv6 (58)
    Hop Limit: 255
    Source Address: xxxxxxxxxxx
    Destination Address: ff02::1
    [Source SA MAC: xxxxxxxxxxxx]
Internet Control Message Protocol v6
    Type: Router Advertisement (134)
    Code: 0
    Checksum: 0x9bd7 [correct]
    [Checksum Status: Good]
    Cur hop limit: 0
    Flags: 0x40, Other configuration, Prf (Default Router Preference): Medium
        0... .... = Managed address configuration: Not set
        .1.. .... = Other configuration: Set
        ..0. .... = Home Agent: Not set
        ...0 0... = Prf (Default Router Preference): Medium (0)
        .... .0.. = Proxy: Not set
        .... ..0. = Reserved: 0
    Router lifetime (s): 0
    Reachable time (ms): 0
    Retrans timer (ms): 0
    ICMPv6 Option (Prefix information : 2001:4479:a01:b100::/64)
        Type: Prefix information (3)
        Length: 4 (32 bytes)
        Prefix Length: 64
        Flag: 0xc0, On-link flag(L), Autonomous address-configuration flag(A)
            1... .... = On-link flag(L): Set
            .1.. .... = Autonomous address-configuration flag(A): Set
            ..0. .... = Router address flag(R): Not set
            ...0 0000 = Reserved: 0
        Valid Lifetime: 2592000
        Preferred Lifetime: 604800
        Reserved
        Prefix: 2001:4479:a01:b100::

rsmarples

Member

Registered: 2009-05-12

Posts: 287

Re: IPv6 dont have default route

Router lifetime (s): 0

It needs a positive lifetime to be a default router.