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Fix PR5559: if fast-forwarding, DF set, and packet too large, send ICMP error..

This commit is contained in:
sommerfe 1998-07-17 00:35:23 +00:00
parent 534520d815
commit 69b1b4758d
1 changed files with 7 additions and 1 deletions
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8
sys/netinet/ip_fil.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: ip_fil.c,v 1.27 1998/05/17 17:07:25 veego Exp $ */
/* $NetBSD: ip_fil.c,v 1.28 1998/07/17 00:35:23 sommerfe Exp $ */
/*
* Copyright (C) 1993-1997 by Darren Reed.
@ -993,6 +993,12 @@ frdest_t *fdp;
* Must be able to put at least 8 bytes per fragment.
*/
if (ip->ip_off & IP_DF) {
/* Send ICMP error here */
struct mbuf *mcopy;
mcopy = m_copy(m, 0, imin((int)ip->ip_len, 68));
if (mcopy)
icmp_error(mcopy, ICMP_UNREACH, ICMP_UNREACH_NEEDFRAG,
ip->ip_dst.s_addr, ifp);
error = EMSGSIZE;
goto bad;
}