Index: share/man/man4/inet.4 =================================================================== --- share/man/man4/inet.4 +++ share/man/man4/inet.4 @@ -284,6 +284,16 @@ in the reassembly queue for a packet. 0 means that the host will not accept any fragmented packets for the VNET. This is a per-VNET limit. +.It Va ip.allow_net0 +Boolean: allow experimental use of addresses in 0.0.0.0/8 as endpoints, +and allow forwarding of packets with these addresses. +.It Va ip.allow_net240 +Boolean: allow experimental use of addresses in 240.0.0.0/4 as endpoints, +and allow forwarding of packets with these addresses. +.It Va ip.loopback_prefix +Integer: prefix length of the address space reserved for loopback purposes. +The default is 8, meaning that 127.0.0.0/8 is reserved for loopback, +and cannot be sent, received, or forwarded on a non-loopback interface. .El .Sh SEE ALSO .Xr ioctl 2 ,