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Moved the 127/8 check below so that IPF redirects have a chance of working.

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MFC after:	1 day
This commit is contained in:
Ruslan Ermilov 2002-02-15 12:19:03 +00:00
parent 039b360dac
commit 51c8ec4a3d
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=90698
1 changed files with 10 additions and 10 deletions
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20
sys/netinet/ip_output.c
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@ -426,16 +426,6 @@ ip_output(m0, opt, ro, flags, imo)
goto bad;
}
/* 127/8 must not appear on wire - RFC1122. */
if ((ntohl(ip->ip_dst.s_addr) >> IN_CLASSA_NSHIFT) == IN_LOOPBACKNET ||
(ntohl(ip->ip_src.s_addr) >> IN_CLASSA_NSHIFT) == IN_LOOPBACKNET) {
if ((ifp->if_flags & IFF_LOOPBACK) == 0) {
ipstat.ips_badaddr++;
error = EADDRNOTAVAIL;
goto bad;
}
}
/*
* Look for broadcast address and
* verify user is allowed to send
@ -823,6 +813,16 @@ ip_output(m0, opt, ro, flags, imo)
ip_fw_fwd_addr = NULL;
pass:
/* 127/8 must not appear on wire - RFC1122. */
if ((ntohl(ip->ip_dst.s_addr) >> IN_CLASSA_NSHIFT) == IN_LOOPBACKNET ||
(ntohl(ip->ip_src.s_addr) >> IN_CLASSA_NSHIFT) == IN_LOOPBACKNET) {
if ((ifp->if_flags & IFF_LOOPBACK) == 0) {
ipstat.ips_badaddr++;
error = EADDRNOTAVAIL;
goto bad;
}
}
m->m_pkthdr.csum_flags |= CSUM_IP;
sw_csum = m->m_pkthdr.csum_flags & ~ifp->if_hwassist;
if (sw_csum & CSUM_DELAY_DATA) {