>> 1)Sending mailserver sends Packet with 1450 Byte and DF bit set. >1460, no?
1450 was just a guess - something bigger than 1402 anyway. I dumped a packet and it turned out that MSS is actually 1380, which would compute to an mtu of 1420, right? 16:17:33.393732 00:1f:12:3e:c6:40 > 00:21:28:75:b9:4b, ethertype 802.1Q (0x8100), length 66: vlan 3, p 0, ethertype IPv4, IP 216.104.20.23.61662 > 213.172.123.138.25: S 1735853561:1735853561(0) win 65535 <mss 1380,sackOK,eol> But still 1420 > 1402...sniff > ndd -set /dev/ip ip_path_mtu_discovery 0 I'll read a bit into that parameter to see, if that could do the trick. Thanks, Kai _______________________________________________ networking-discuss mailing list networking-discuss@opensolaris.org
