Date: Mon, 24 Jul 2000 23:53:00 -0700 From: "Crist J. Clark" <cristjc@earthlink.net> To: freebsd-questions@freebsd.org Subject: ppp(8) NAT Problem Message-ID: <20000724235300.D258@pool0653.cvx20-bradley.dialup.e>
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I am having a problem with userland ppp(8), and it started when I
started running with the builtin NAT. When the connection is lost by
time out or disconnect and restarted, the tun0 interface just piles on
a new address and it retains the old. For example,
% ifconfig tun0
tun0: flags=8051<UP,POINTOPOINT,RUNNING,MULTICAST> mtu 1500
inet 10.0.0.1 --> 10.0.0.2 netmask 0xffffffff
inet 209.179.252.143 --> 255.255.255.255 netmask 0xffffffff
inet 209.179.253.65 --> 255.255.255.255 netmask 0xffffffff
inet 209.179.251.124 --> 207.217.148.27 netmask 0xffffffff
Opened by PID 58
The 10-net numbers are the defaults I put in the ppp.conf. The second
and third pair are real ones that were in use, but the connection
timed out and was dropped. Notice the odd mangling of the other end of
the link to 255.255.2555.255. The last entry is the link currently
up.
Is this expected behaviour? I'm starting to build up weird entries in
the routing table as well,
% netstat -rn
Routing tables
Internet:
Destination Gateway Flags Refs Use Netif Expire
default 207.217.148.27 UGSc 3 19522 tun0
10.0.0.2 10.0.0.1 UH 0 0 tun0
127.0.0.1 127.0.0.1 UH 2 7110 lo0
192.168.xxx link#4 UC 0 0 ep0 =>
192.168.xxx.1 0:e0:29:11:d3:a9 UHLW 3 22463 ep0 1180
207.217.148.27 209.179.251.124 UH 4 0 tun0
255.255.255.255 209.179.252.143 UHb 0 0 tun0
What's that last one? But the real numbers have been removed and the
default route has been overwritten correctly.
Bug or feature? Or misconfiguration? Nothing surprising in ppp.conf
and I'm running with,
ppp_enable="YES"
ppp_nat="YES"
ppp_profile="EarthLink"
gateway_enable="YES"
--
Crist J. Clark cjclark@alum.mit.edu
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