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Get rid of the messages: "arp: zero IP addr from ..." 

If one really wants to know about those confused PCs
trying to use IP address zero, they can use tcpdump.
This commit is contained in:
gwr 1997-10-31 02:54:08 +00:00
parent bbf2ccdf78
commit 011d063b25
1 changed files with 13 additions and 10 deletions
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23
sys/netinet/if_arp.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: if_arp.c,v 1.41 1997/10/02 19:42:02 is Exp $ */
/* $NetBSD: if_arp.c,v 1.42 1997/10/31 02:54:08 gwr Exp $ */
/*
* Copyright (c) 1982, 1986, 1988, 1993
@ -479,17 +479,20 @@ in_arpinput(m)
bcopy((caddr_t)ar_tpa(ah), (caddr_t)&itaddr, sizeof (itaddr));
/*
* If either the source or destination IP address is zero, then
* the packet is bogus and we can just ignore it. If we try to
* process such bogus packets normally, they cause odd problems,
* especially when we are using IP address zero (diskless boot).
* If the target IP address is zero, ignore the packet.
* This prevents the code below from tring to answer
* when we are using IP address zero (booting).
*/
if (in_nullhost(isaddr) || in_nullhost(itaddr)) {
/* On some networks, this happens a lot! (stupid PCs...) */
log(LOG_DEBUG, "arp: zero IP addr from link address %s\n",
lla_snprintf(ar_sha(ah), ah->ar_hln));
if (in_nullhost(itaddr))
goto out;
/*
* If the source IP address is zero, this is most likely a
* confused host trying to use IP address zero. (Windoze?)
* XXX: Should we bother trying to reply to these?
*/
if (in_nullhost(isaddr))
goto out;
}
/* Search for a matching interface address. */
for (ia = in_ifaddr.tqh_first; ia != 0; ia = ia->ia_list.tqe_next)