PING namidame.2ch.net (207.29.253.235): 56 data bytes
64 bytes from 207.29.253.235: icmp_seq=0 ttl=242 time=128.717 ms
64 bytes from 207.29.253.235: icmp_seq=1 ttl=243 time=108.853 ms
64 bytes from 207.29.253.235: icmp_seq=2 ttl=241 time=109.089 ms
64 bytes from 207.29.253.235: icmp_seq=3 ttl=242 time=109.428 ms
64 bytes from 207.29.253.235: icmp_seq=4 ttl=243 time=109.522 ms
64 bytes from 207.29.253.235: icmp_seq=5 ttl=243 time=108.871 ms
64 bytes from 207.29.253.235: icmp_seq=6 ttl=241 time=109.746 ms

うちからはこんな感じttlが変化するのは変?