Originariamente inviato da dottor nick
questi sono i risultati

Pinging [66.230.207.58] with 40 bytes ->bytes=40 time=143ms TTL=53
Pinging [66.230.207.58] with 750 bytes ->bytes=750 time=159ms TTL=53
Pinging [66.230.207.58] with 1125 bytes ->bytes=1125 time=167ms TTL=53
Pinging [66.230.207.58] with 1312 bytes ->bytes=1312 time=171ms TTL=53
Pinging [66.230.207.58] with 1406 bytes ->bytes=1406 time=173ms TTL=53
Pinging [66.230.207.58] with 1453 bytes ->bytes=1453 time=174ms TTL=53
Pinging [66.230.207.58] with 1476 bytes -> ..fragmented
Pinging [66.230.207.58] with 1465 bytes -> ..fragmented
Pinging [66.230.207.58] with 1459 bytes ->bytes=1459 time=173ms TTL=53
Pinging [66.230.207.58] with 1462 bytes ->bytes=1462 time=173ms TTL=53
Pinging [66.230.207.58] with 1463 bytes ->bytes=1463 time=172ms TTL=53
Pinging [66.230.207.58] with 1464 bytes ->bytes=1464 time=172ms TTL=53
The largest possible non-fragmented packet is 1464 (1492 - 28 ICMP & IP headers).
You can set your MTU to 1492

perche allora se metto MTU 1492 ritorna a 1470???
questo non te lo so dire,cmq se fai una ricerca anche su questo forum con MTU 1470 vedrai che tanti altri utenti Tiscali sono bloccati a quel valore...