gallatin dde41c9786 Make lagg creation more fault tolerant
- Warn, don't exit, when SIOCSLAGGPORT returns an error.

When we exit with an error during lagg creation, a single
failed NIC (which no longer attaches) can prevent lagg
creation and other configuration, such as adding an IPv4
address, and thus leave a machine unreachable.

- Preserve non-EEXISTS errors for exit status from SIOCSLAGGPORT,
  in case scripts are looking for it. Hopefully this can be
  extended if other parts of ifconfig can allow a "soft" failure.

- Improve the warning message to mention what lagg and what
  member are problematic.

Reviewed by: jtl, glebius
Sponsored by: Netflix
Differential Revision:	https://reviews.freebsd.org/D15046
2018-04-17 12:54:58 +00:00
..
2017-02-06 08:49:57 +00:00