investigate dropping of connections during wifi dropouts

[christf]

tcp connections should not break.

[christf]

we will need the output of:

• ip -6 neigh show
• ip r s
• tcpdump from client
• tcpdump from node
• output of logread -f|grep l3roamd

[christf]

this might be addressed by 9ff613629b3c7dc2c9a75c50d9a1ae66cebab2c5

[christf]

this did not occur again with 1.8.0-snapshot32 => closing.

Please re-open if there is something to look at.