Hi, I am seeing a lot of ICMP Must Fragment packets with incorrect ICMP checksums on a RELENG_4 box which holds up 40-60 PPTP (mpd/Netgraph) VPN connections at any given time. The peer understandably ignores the ICMP packet with a bad checksum and never fragments the offending TCP packet, effectively killing the connection after a while.
A major point is that I'm only seeing them on the interfaces NAT'ed by ipnat. Is anybody else having trouble with ICMP checkums with IPFilter 3.4.35 on a reasonably recent RELENG_4 box? FreeBSD unnamed 4.10-STABLE FreeBSD 4.10-STABLE #1: Thu Dec 2 10:31:16 EET 2004 [EMAIL PROTECTED]:/usr/obj/usr/src-bsd/4.0S/src/sys/UNNAMED i386 drwxr-xr-x 2 root wheel 512 Dec 2 11:43 /var/db/pkg/mpd-3.18_2 G'luck, Peter -- Peter Pentchev [EMAIL PROTECTED] [EMAIL PROTECTED] [EMAIL PROTECTED] PGP key: http://people.FreeBSD.org/~roam/roam.key.asc Key fingerprint FDBA FD79 C26F 3C51 C95E DF9E ED18 B68D 1619 4553 This sentence was in the past tense.
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