gluon/package/gluon-radv-filterd
Sven Eckelmann a6298493f7
gluon-radv-filterd: Fix size argument of recvfrom
The 6th argument to recvfrom is not an unsigned int pointer. This may work
on systems where socklen_t and unsigned int are both 4 byte but other
systems may use 8 byte for that (glibc uses size_t as type for socklen_t
and size_t is 8 byte on amd64 and similar architectures).

Signed-off-by: Sven Eckelmann <sven@narfation.org>
2018-01-03 15:34:29 +01:00
..
files gluon-radv-filterd: Remove all UCI options except threshold 2018-01-03 14:59:48 +01:00
luasrc/lib/gluon/upgrade gluon-radv-filterd: Various small fixes due to NeoRaider 2018-01-03 14:59:48 +01:00
src gluon-radv-filterd: Fix size argument of recvfrom 2018-01-03 15:34:29 +01:00
check_site.lua gluon-radv-filterd: Various small fixes due to NeoRaider 2018-01-03 14:59:48 +01:00
Makefile gluon-radv-filterd: Various small fixes due to NeoRaider 2018-01-03 14:59:48 +01:00
README.md Add package gluon-radv-filterd 2018-01-03 14:59:35 +01:00

gluon-radv-filterd

This package drops all incoming router advertisements except for the default router with the best metric according to B.A.T.M.A.N. advanced.

Note that advertisements originating from the node itself (for example via gluon-radvd) are not affected and considered at all.

"Best" router

The best router is determined by the TQ that is reported for its originator by B.A.T.M.A.N. advanced. If, for some reason, another gateway with a better TQ appears or an existing gateway increases its TQ above that of the chosen gateway, the chosen gateway will remain selected until the better gateway has a TQ value at least X higher than the selected gateway. This is called hysteresis, and X can be specified on the commandline/via UCI/the site.conf and defaults to 20 (just as for the IPv4 gateway selection feature built into B.A.T.M.A.N. advanced).

"Local" routers

The package has functionality to assign "local" routers, i.e. those connected via cable or WLAN instead of via the mesh (technically: appearing in the transtable_local), a fake TQ of 512 so that they are always preferred. However, if used together with the gluon-ebtables-filter-ra-dhcp package, these router advertisements are filtered anyway and reach neither the node nor any other client. You currently have to disable the package or insert custom ebtables rules in order to use local routers.