src/usr.sbin/rtadvd, branch release/12.3.0

MFC r350086:

2019-07-24T14:39:31Z

Remove obsolete compatibility code from rtadvd.

MFC r346960:

2019-05-08T16:04:33Z

Retry upon NET_RT_IFLIST sysctl failure. PR: 195191

Reduce pollution.

2018-05-11T00:01:43Z

While includes unconditionally, it is only actually used in code which is conditional on _KERNEL. Make the #include itself conditional as well, and fix userland code that uses for other purposes but relied on to bring it in. MFC after: 1 week

various: general adoption of SPDX licensing ID tags.

2017-11-27T15:37:16Z

Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. No functional change intended.

General further adoption of SPDX licensing ID tags.

2017-11-20T19:49:47Z

Mainly focus on files that use BSD 3-Clause license. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. Special thanks to Wind River for providing access to "The Duke of Highlander" tool: an older (2014) run over FreeBSD tree was useful as a starting point.

DIRDEPS_BUILD: Update dependencies.

2017-10-31T00:07:04Z

Renumber copyright clause 4

2017-02-28T23:42:47Z

Renumber cluase 4 to 3, per what everybody else did when BSD granted them permission to remove clause 3. My insistance on keeping the same numbering for legal reasons is too pedantic, so give up on that point. Submitted by: Jan Schaumann Pull Request: https://github.com/freebsd/freebsd/pull/96

rtadvd(8): double assignment.

2017-02-23T15:10:46Z

Remove doubtful initialization since the value will be overwritten immediately afterwards. Found with: coccinelle (da.cocci)

Add link-layer address option in RA even for IFT_L2VLAN and IFT_BRIDGE.

2016-11-05T19:51:13Z

Reported by: philip MFC after: 3 days

In rtadvd, interface lookup calls if_indextoname() many times in a loop,

2016-11-02T15:11:23Z

(it takes a long time on systems with many interfaces) without reason and without checking its return value. Reviewed by: cem Obtained from: Maryse Levavasseur MFC after: 1 month Sponsored by: Stormshield Differential Revision: https://reviews.freebsd.org/D6979