Date: Tue, 6 Jul 1999 12:34:32 -0500 (CDT) From: "Jasper O'Malley" <jooji@webnology.com> To: freebsd-stable@FreeBSD.ORG Subject: Re: ARP Problem? Need confirmation... Message-ID: <Pine.LNX.4.02.9907061222320.455-100000@mercury.webnology.com> In-Reply-To: <Pine.LNX.4.02.9907051329260.17326-100000@mercury.webnology.com>
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Couple of questions that might go better in -questions, but they have
something to do with my understanding of the proxy ARP bug discussed in
this thread:
1) Can anyone explain what the difference between "permanent published"
ARP table entries, and "permanent published (proxy only)" ARP table
entries?
2) What purpose does the RTF_ANNOUNCE (aka RTF_PROTO2) routing message
flag serve? How about the sin_other parameter of the sockaddr_inarp
structure (defined in /usr/include/netinet/if_ether.h)?
3) How about the significance of the RTF_HOST routing message flag (i.e.
how does an IP "host" route functionally differ from a "net" route with
a /32 netmask)?
4) What's the purpose of this snippet of code from rtmsg() in
usr.sbin/arp/arp.c?
if (doing_proxy) {
if (export_only)
sin_m.sin_other = SIN_PROXY;
else {
rtm->rtm_addrs |= RTA_NETMASK;
rtm->rtm_flags &= ~RTF_HOST;
}
}
Cheers,
Mick
The Reverend Jasper P. O'Malley dotdot:jooji@webnology.com
Systems Administrator ringring:asktheadmiral
Webnology, LLC woowoo:http://www.webnology.com/~jooji
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