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Disable interface checking for packets subject to "ipfw fwd".

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Chris Johnson <cjohnson@palomine.net> tested this fix in -stable.
This commit is contained in:
Don Lewis 2001-03-04 03:22:36 +00:00
parent 6a251185af
commit e15ae1b226
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=73402
1 changed files with 4 additions and 3 deletions
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7
sys/netinet/ip_input.c
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@ -515,7 +515,6 @@ ip_input(struct mbuf *m)
/*
* Don't accept packets with a loopback destination address
* unless they arrived via the loopback interface.
* XXX - should ip->ip_dst.s_addr be pkt_dst.s_addr?
*/
if ((ntohl(ip->ip_dst.s_addr) & IN_CLASSA_NET) ==
(IN_LOOPBACKNET << IN_CLASSA_NSHIFT) &&
@ -531,10 +530,12 @@ ip_input(struct mbuf *m)
* Enable a consistency check between the destination address
* and the arrival interface for a unicast packet (the RFC 1122
* strong ES model) if IP forwarding is disabled and the packet
* is not locally generated.
* is not locally generated and the packet is not subject to
* 'ipfw fwd'.
*/
checkif = ip_checkinterface && (ipforwarding == 0) &&
((m->m_pkthdr.rcvif->if_flags & IFF_LOOPBACK) == 0);
((m->m_pkthdr.rcvif->if_flags & IFF_LOOPBACK) == 0) &&
(ip_fw_fwd_addr == NULL);
TAILQ_FOREACH(ia, &in_ifaddrhead, ia_link) {
#define satosin(sa) ((struct sockaddr_in *)(sa))