Date: Sun, 11 Jul 1999 16:07:47 -0500 (CDT) From: "Jasper O'Malley" <jooji@webnology.com> To: freebsd-hackers@freebsd.org Subject: ARP questions Message-ID: <Pine.LNX.4.02.9907111607190.4424-100000@mercury.webnology.com>
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I'm going to take a crack at cleaning up arp(8), but I need hear some
specific answers from someone who's worked with the ARP subsystem:
1) What's the purpose of the sin_other field of a struct sockaddr_inarp
(which is either set to 0 or SIN_PROXY)?
2) What's the difference between a "published" or "published (proxy only)"
ARP table entry (as reported by arp(8))?
3) Should a proxy ARP entry be a host route (i.e. RTF_HOST is set) as I
suspect, or a net route with a /32 netmask, as it strangely seemed to
be for "published" entries before arp(8) broke in -STABLE? For either
case, why?
4) If I want to perform proxy ARP on directly attached Ethernet network
A for a host on directly attached Ethernet network B, do I actually
need two ARP table entries--one "published (proxy only)" entry to allow
for the proxying on network A, and another ordinary entry (which may
in fact be automatically created through the normal ARP mechanism) to
actually forward packets to the host on network B?
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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