Greetings list,

I've had a number of issues from a 1.6 -> 2.0.2 upgrade, most revolve 
around mss clamping issues.

Dual-homed server: PPPoE0, 1492 MTU, tried mss clamping/ipnat of 1440, 
1460 and 1420.

My only issue is with a naughty server behind a router with full ICMP 
filtering using MTU discovery.  It seems the clamping may not be taking 
effect as I can connect with a Debian box with any clamping size between 
1450 to 1420.  NetBSD 2.0.2 with custom kernel will not.  All normal 
nat/ipf rules work fine.  It's a single server with this problem with 
the ICMP filtering (no traceroutes or pings work).

My question is, are there any known issues with 2.0.2 release, PPPoE, 
IPNAT and mss clamping?  I found some old maillist threads from 1.6 and 
2.0A, but nothing descript about fixes nor any mention of 2.0.2+.

I'm going to perform more tcpdump research into the issue, but from all 
angles, it appears mssclamping isn't working properly in 2.0.2 + ipnat.  
Any tips, direction or insights greatly appreciated.

Cheers,
Steve