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 From:  Joe Lagreca <lagreca at gmail dot com>
 To:  m0n0wall at lists dot m0n0 dot ch
 Subject:  IPSEC packet loss after selecting Prefer old IPsec SAs
 Date:  Thu, 22 Sep 2005 19:25:07 -0700
I was running M0n0 1.11 on both ends of my tunnel.  But everytime I
shut the power off at my house (doing electrical work) the IPSEC
connection wouldn't work again, until I turned IPSEC off and then back
on.

I heard of the option to prefer old IPSEC SA's in the new beta and
decided to try it on my home m0n0, leaving my work m0n0 at 1.11.

Now when I turn the power back on at home, the IPSEC tunnel comes
backup, but with severe packet loss.  Here is what it looks like:

C:\Documents and Settings\lagreca>ping -t 192.168.1.1

Pinging 192.168.1.1 with 32 bytes of data:

Request timed out.
Reply from 192.168.1.1: bytes=32 time=41ms TTL=63
Reply from 192.168.1.1: bytes=32 time=48ms TTL=63
Reply from 192.168.1.1: bytes=32 time=55ms TTL=63
Request timed out.
Request timed out.
Reply from 192.168.1.1: bytes=32 time=47ms TTL=63
Reply from 192.168.1.1: bytes=32 time=48ms TTL=63
Reply from 192.168.1.1: bytes=32 time=52ms TTL=63
Request timed out.
Reply from 192.168.1.1: bytes=32 time=95ms TTL=63
Reply from 192.168.1.1: bytes=32 time=45ms TTL=63
Reply from 192.168.1.1: bytes=32 time=50ms TTL=63
Reply from 192.168.1.1: bytes=32 time=68ms TTL=63
Reply from 192.168.1.1: bytes=32 time=40ms TTL=63
Request timed out.

Ping statistics for 192.168.1.1:
    Packets: Sent = 16, Received = 11, Lost = 5 (31% loss),
Approximate round trip times in milli-seconds:
    Minimum = 40ms, Maximum = 95ms, Average = 53ms

Does anyone have an idea what is causing this or how I can solve it?