Aren/NetBSD
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

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

Browse Source 
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
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

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)