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| author | Yaroslav Tykhiy <ytykhiy@gmail.com> | 2008-02-07 11:00:42 +0000 |
|---|---|---|
| committer | Yaroslav Tykhiy <ytykhiy@gmail.com> | 2008-02-07 11:00:42 +0000 |
| commit | 5702f0f0a50c5a136d233ee379d71aeba0893325 (patch) | |
| tree | 23a8b53fa85af1225910b96bb8276510edeeeab3 /sbin | |
| parent | a00672cff92a23dd28a5e6a1f3a52189eb0d7d7a (diff) | |
| download | src-5702f0f0a50c5a136d233ee379d71aeba0893325.tar.gz src-5702f0f0a50c5a136d233ee379d71aeba0893325.zip | |
Add a note that ipfw states do not implicitly match ICMP error messages.
Notes
Notes:
svn path=/head/; revision=176084
Diffstat (limited to 'sbin')
| -rw-r--r-- | sbin/ipfw/ipfw.8 | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/sbin/ipfw/ipfw.8 b/sbin/ipfw/ipfw.8 index 2c175ed020bb..67ed26225d04 100644 --- a/sbin/ipfw/ipfw.8 +++ b/sbin/ipfw/ipfw.8 @@ -2711,3 +2711,9 @@ ipfw nat is not compatible with the tcp segmentation offloading (TSO). Thus, to reliably nat your network traffic, please disable TSO on your NICs using .Xr ifconfig 8 . +.Pp +ICMP error messages are not implicitly matched by dynamic rules +for the respective conversations. +To avoid failures of network error detection and path MTU discovery, +ICMP error messages may need to be allowed explicitly through static +rules. |