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communicate
2007 Dec 06
0
GRE tunnel stops traffic when idle
Hello,
I''ve set up a GRE tunnel between two Linux boxes and it''s working well,
with or without IPSEC (under GRE). The problem is that when I have no
traffic for some minutes, side A cannot communicate to side B any more,
unless side B tries to communidate to side A. The same thing happens in
the other direction.
For example, side A pings side B. No reply. Keep pinging.
Side B pings side A. Reply ok. Side A starts getting reply from side B
too.
It''s like the kernel suspends the tunnel for inactivity.
That happens even in a non NAT enviro...