Hello,

I'm just trying to reach grml.org

;; ANSWER SECTION: grml.org. 168 IN AAAA 2a02:790:1:12::6

via ipv6. It does not work. My uplink is via Sixxs and normally stable. ping6 to heise.de works. ping6 to grml.org doesn't work and connecting to port 80 does not work:

listening on sixxs, link-type RAW (Raw IP), capture size 65535 bytes 11:10:42.139760 IP6 2a01:1e8:e100:272::2.60585 > 2a02:790:1:12::6.80: Flags [S], seq 1425174929, win 12200, options [mss 1220,sackOK,TS val 779758502 ecr 0,nop,wscale 7], length 0 11:10:43.137952 IP6 2a01:1e8:e100:272::2.60585 > 2a02:790:1:12::6.80: Flags [S], seq 1425174929, win 12200, options [mss 1220,sackOK,TS val 779758752 ecr 0,nop,wscale 7], length 0 11:10:45.141995 IP6 2a01:1e8:e100:272::2.60585 > 2a02:790:1:12::6.80: Flags [S], seq 1425174929, win 12200, options [mss 1220,sackOK,TS val 779759253 ecr 0,nop,wscale 7], length 0 11:10:49.154020 IP6 2a01:1e8:e100:272::2.60585 > 2a02:790:1:12::6.80: Flags [S], seq 1425174929, win 12200, options [mss 1220,sackOK,TS val 779760256 ecr 0,nop,wscale 7], length 0 ^C 4 packets captured 4 packets received by filter 0 packets dropped by kernel

If you do not provide IPv6 connectivity, you should completly disable it or reject the connections instead of dropping them. This would enable a fast fallback to IPv4 on the client side.

Best regards from Dresden/Germany Viele Grüße aus Dresden Heiko Schlittermann