diff options
Diffstat (limited to 'usr.sbin/arp/arp.4')
| -rw-r--r-- | usr.sbin/arp/arp.4 | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/usr.sbin/arp/arp.4 b/usr.sbin/arp/arp.4 index 6773ddf..c13505f 100644 --- a/usr.sbin/arp/arp.4 +++ b/usr.sbin/arp/arp.4 @@ -100,6 +100,25 @@ This is no longer supported. .Pp ARP watches passively for hosts impersonating the local host (i.e. a host which responds to an ARP mapping request for the local host's address). +.Pp +Proxy ARP is a feature whereby the local host will respond to requests +for addresses other than itself, with its own address. +Normally, proxy ARP in +.Fx +is set up on a host-by-host basis using the +.Xr arp 4 +utility, by adding an entry for each host inside a given subnet for +which proxying of ARP requests is desired. +However, the +.Dq "proxy all" +feature causes the local host to act as a proxy for +.Em all +hosts. +It may be enabled by setting the +.Xr sysctl 8 +MIB variable +.Va net.link.ether.inet.proxyall +to 1. .Sh DIAGNOSTICS .Em "arp: %x:%x:%x:%x:%x:%x is using my IP address %d.%d.%d.%d!" : ARP has discovered another host on the local network which responds to |
