Path MTU netstat
- From: "Sergey" <_lion_2000@xxxxxxx>
- Date: Wed, 27 Feb 2008 14:05:27 +0500
I want to see currently discovered Path MTU.
I tried netstat -rnaW, but it doesn't show any cloned routes, but i clearly
see Path MTU discovery working, by watching tcpdump tracing. An application
sends full sized packet with DF bit, receives ICMP Unreach Frag message and
retransmits downsized packet again.
I need this, because there is another 6.2-RELEASE-p3 host, which doesn't
perfom Path MTU discovery, although:
# sysctl -a | grep path_mtu
net.inet.tcp.path_mtu_discovery: 1
I tried disabling firewall, simplifying routing, but none helps.
Anyone help?
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