diff options
Diffstat (limited to 'share/man/man4/icmp.4')
-rw-r--r-- | share/man/man4/icmp.4 | 47 |
1 files changed, 46 insertions, 1 deletions
diff --git a/share/man/man4/icmp.4 b/share/man/man4/icmp.4 index 5fa5752..d5a5b13 100644 --- a/share/man/man4/icmp.4 +++ b/share/man/man4/icmp.4 @@ -32,7 +32,7 @@ .\" @(#)icmp.4 8.1 (Berkeley) 6/5/93 .\" $FreeBSD$ .\" -.Dd June 5, 1993 +.Dd March 21, 2003 .Dt ICMP 4 .Os .Sh NAME @@ -87,6 +87,51 @@ them (based on the destination address). Incoming packets are received with the .Tn IP header and options intact. +.Ss MIB Variables +The +.Tn ICMP +protocol implements a number of variables in the +.Va net.inet.icmp +branch of the +.Xr sysctl 3 +MIB. +.Bl -tag -width ".Va icmplim_output" +.It Va maskrepl +.Pq Vt boolean +Enable/disable replies to ICMP Address Mask Request packets. +Defaults to false. +.It Va maskfake +.Pq Vt "unsigned integer" +When +.Va maskrepl +is set and this value is non-zero, +it will be used instead of the real address mask when +the system replies to an ICMP Address Mask Request packet. +Defaults to 0. +.It Va icmplim +.Pq Vt integer +Bandwidth limit for ICMP replies in packets/second. +Used when +.Va icmplim_output +is non-zero. +Defaults to 200. +.It Va icmplim_output +.Pq Vt boolean +Enable/disable bandwidth limiting of ICMP replies. +Defaults to true. +.It Va drop_redirect +.Pq Vt boolean +Enable/disable dropping of ICMP Redirect packets. +Defaults to false. +.It Va log_redirect +.Pq Vt boolean +Enable/disable logging of ICMP Redirect packets. +Defaults to false. +.It Va bmcastecho +.Pq Vt boolean +Enable/disable ICMP replies received via broadcast or multicast. +Defaults to false. +.El .Sh ERRORS A socket operation may fail with one of the following errors returned: .Bl -tag -width Er |