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Incoming packets no longer have their ip_sum zero'd

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brian 1997-02-06 11:16:21 +00:00
parent f1bef29ded
commit 51f25cb044
1 changed files with 4 additions and 4 deletions
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8
share/man/man4/divert.4
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@ -105,14 +105,14 @@ packet to get diverted.
If different fragments divert to different ports,
then which port ultimately gets chosen is unpredictable.
.Pp
Packets are received and sent unchanged, with two exceptions:
read as incoming will have their IP header checksum zeroed,
and packets written as outgoing have their IP header checksums overwritten
Packets are received and sent unchanged, except that
packets written as outgoing have their IP header checksums overwritten
with the correct value.
Packets written as incoming and having incorrect checksums will be dropped.
Otherwise, all header fields are unchanged (and therefore in network order).
.Pp
Binding to port numbers less than 1024 requires super-user access.
Binding to port numbers less than 1024 requires super-user access, as does
creating a socket of type SOCK_RAW.
.Sh ERRORS
Writing to a divert socket can return these errors, along with
the usual errors possible when writing raw packets: