ping test: banana3215 からの ping はごく普通ですね。
TTL=64オリジン。

%ping mamono.2ch.net
PING mamono.2ch.net (207.29.253.220): 56 data bytes
64 bytes from 207.29.253.220: icmp_seq=0 ttl=64 time=5.701 ms
64 bytes from 207.29.253.220: icmp_seq=1 ttl=64 time=0.357 ms
64 bytes from 207.29.253.220: icmp_seq=2 ttl=64 time=0.360 ms
64 bytes from 207.29.253.220: icmp_seq=3 ttl=64 time=0.363 ms
64 bytes from 207.29.253.220: icmp_seq=4 ttl=64 time=0.357 ms
64 bytes from 207.29.253.220: icmp_seq=5 ttl=64 time=0.924 ms
64 bytes from 207.29.253.220: icmp_seq=6 ttl=64 time=0.358 ms

banana3215 => namidame は、今 ping かからない状態。

%ping namidame.2ch.net
PING namidame.2ch.net (207.29.253.235): 56 data bytes
^C
--- namidame.2ch.net ping statistics ---
9 packets transmitted, 0 packets received, 100% packet loss