ipv6 : why ndp resolves to global scope address?
- by Julien
I'm facing a strange ipv6 behavior and I don't know how to solve it because I'm not familiar with ipv6. Maybe this behavior is normal.
I hope that you will help me.
( I'm running under debian 6.0.9 with a custom kernel 3.2.58 )
machine A is "2a00:7d30:edf6:100::1" wants to ping machine B, which is "2a00:7d30:edf6:100::10". Both are on the same segment.
machine A asks for the address of machine B and I don't understand why machine B gives its global scope address instead of the local scope one ?
10:59:02.082785 IP6 2a00:7d30:edf6:100::1 ff02::1:ff00:10: ICMP6, neighbor solicitation, who has 2a00:7d30:edf6:100::10, length 32
10:59:02.082821 IP6 2a00:7d30:edf6:100::10 2a00:7d30:edf6:100::1: ICMP6, neighbor advertisement, tgt is 2a00:7d30:edf6:100::10, length 32
after that machine A pings the global scope address of machine B and it works fine :
10:59:02.082927 IP6 2a00:7d30:edf6:100::1 2a00:7d30:edf6:100::10: ICMP6, echo request, seq 1, length 64
10:59:02.082960 IP6 2a00:7d30:edf6:100::10 2a00:7d30:edf6:100::1: ICMP6, echo reply, seq 1, length 64
Thank you for you help
best regards
Julien