markj fa7c28414f Retry upon NET_RT_IFLIST sysctl failure.
Port the logic used by getifaddrs(3) to handle the case where
NET_RT_IFLIST returns ENOMEM, which can occur if the list size changes
between the buffer allocation and sysctl read.

PR:		195191
Submitted by:	Guy Yur <guyyur@gmail.com> (original version)
MFC after:	1 week
2019-04-30 14:44:39 +00:00
..
2019-04-30 14:44:39 +00:00