SMCRoute v2.5.0

Highlights: native /etc/smcroute.d/*.conf support and seamless update/removal of routes and groups by reloading .conf files or using smcroutectl.

Tested on Linux 5.11 and FreeBSD 12.2

Changes

• Fully automated test suite with 15 tests covering many use cases
• Support for /etc/smcroute.d/*.conf, issue #103
• Support for applying changes to .conf files without disturbing established flows -- i.e., seamless addition or removal of outbound interfaces in existing rules, or add/remove routes, without ever affecting other routes, issue #103
• Support for route replacement/update smcroutectl, issue #115
• Full (*,G) wildcard route matching, for IPv4 and IPv6, issue #31
• Variant wildcard route matching with source and group range matching. This may of course waste a lot of resources, so handle with care:
  • (*,G/LEN), issue #135 (IPv4), and issue #162 (IPv6)
  • (S/LEN,G), issue #81
  • (S/LEN,G/LEN)
• Full SSM/ASM group join support, for both IPv4 and IPv6. Including joining group ranges from both smcroutectl and .conf, issue #118
  Please note, no SSM support on FreeBSD, only Linux
• New command line option, -F file.conf to verify file syntax, issue #100
• The -I NAME command line option has changed to -i NAME, compat support for the previous option remains
• The mrdisc flag to the phyint directive is now what solely controls the functionality per interface. Previously a mechanism to enable/disable the functionality (if enabled) if active routes were in place. However, this did not cover (*,G) routes so that has been removed to simplify and guarantee full function
• Output format from smcroutectl has been extensively changed. E.g, new /LEN support means wider columns, but heading have also changed
• The .tar.xz archive has been has been dropped as distribution format, keeping only tar.gz

Fixes

• Fix #120: failed ASM/SSM IGMP join if interface has no address
• Fix #130: dynamic IPv6 routes are not flushed (like IPv4 (*,G))
• Fix #149: (*,G) cache timeout callback stops, or never starts
• Fix #151: same log entries
• Fix #156: smcruotectl show does not show IPv6 routes
• Fix stochastic timer behavior, e.g. mrdisc announcements experienced interference with the (*,G) cache timer