Hi, mpi@ removed ARP as a load balancing mode from carp(4) on November 2, 2015. The manual page of ifconfig(8) never reflected this change.
Regards, Martin Index: ifconfig.8 =================================================================== RCS file: /cvs/src/sbin/ifconfig/ifconfig.8,v retrieving revision 1.289 diff -u -p -r1.289 ifconfig.8 --- ifconfig.8 17 Nov 2017 18:04:51 -0000 1.289 +++ ifconfig.8 29 Nov 2017 23:42:05 -0000 @@ -768,7 +768,6 @@ Acceptable values are 0 to 254; the defa Set the load balancing mode to .Ar mode . Valid modes are -.Ar arp , .Ar ip , .Ar ip-stealth , and
