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 environment. NAT isn't a problem because I'm using NAT-T in those environments, and NAT-T itself has a keep alive method that prevents the NAT routers to drop the mapping. Is there a "keep alive method" for GRE tunnels. I know that if I keep a ping once a minute, that would fix the problem, but I'm looking for something that isn't a band aid. Thanks. -- MARLON DUTRA Propus GnuPG ID: 0x3E2060AC pgp.mit.edu http://www.propus.com.br/ http://hackers.propus.com.br/~marlon/ _______________________________________________ LARTC mailing list LARTC@xxxxxxxxxxxxxxx http://mailman.ds9a.nl/cgi-bin/mailman/listinfo/lartc
