I noticed that my bcm53xx devices run out of memory after running
wireless monitor interface for about 2 days.
This problem occurs since 0694d08c84fd ("bcm53xx: switch to kernel
4.9") which bumped kernel from 4.4.53 to 4.9.14 and is still present
when using 4.14.
Interestingly this memory drain requires at least one of:
net.ipv6.conf.default.forwarding=1
net.ipv6.conf.all.forwarding=1
to be set. OpenWrt happens to use both by default.
This is *not* a memory leak. Restarting wireless interfaces frees all
consumed memory.
Any idea what may be causing this?
--
Rafał
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