Date: Tue, 23 Sep 2008 00:42:30 -0700 From: Julian Elischer <julian@elischer.org> To: Igor R <igor4ml@gmail.com> Cc: freebsd-net@freebsd.org Subject: Re: Multiple routing tables (setfib) trouble Message-ID: <48D89DE6.6090606@elischer.org> In-Reply-To: <a53601230809222249t563149b0le4b0c0a73d9d93e7@mail.gmail.com> References: <a53601230809222249t563149b0le4b0c0a73d9d93e7@mail.gmail.com>
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Igor R wrote: > Hello! > > I'm using FreeBSD 7.0-STABLE (Jul 25) and I have two Internet > connections. Both are ethernet based, but one requires PPTP (2) while > another is direct with external IP address. > Trouble is that provider (1) of connection with external address is > limiting number of outgoing TCP connections (this was reason I got > another provider). So now my setup is > 1) On boot I have default route to provider (1) > 2) After MPD (PPTP) is up I replace default route with route to provider (2) > 3) I use "route-to" and "reply-to" in /etc/pf.rules to route incoming > SSH and HTTP and outgoing HTTP via provider (1), also I use these > rules to provide routing to internal network of this provider > 4) All other traffic (BitTorrent :-) ) is going via provider (2) via > ng0 (PPTP) interface > All works fine, but ... Provider with PPTP is less reliable and when > PPTP connection fails I have trouble connecting to my SSH server > (because DNS stops working) > > So, after FreeBSD got multiple routing tables I tried this: > > 1) On boot I have default route to provider (1) > 2) After MPD (PPTP) is up I do > 2a) setfib 1 route add default PPTP_DEFAULT_GATEWAY > 2b) setfib 1 /usr/local/etc/rc.d/tranmission restart > > And here are problems: > 1) All outgoing traffic with fib==1 goes through provider (2) as > expected, answers are received > 2) BUT ... incoming traffic looks strange: answers are sent through > default gateway with fib==0 > > I made simple test: > > setfib 1 netcat -l 8000 > and then from outside: > telnet my_ip 8000 > I see (with tcpdump) incoming packets on ng0 (PPTP) inteface, but no > answers. If I start tcpdump on other provider interface I see packets > with answers. But if I try > setfib 1 traceroute some_host > then routing works via correct gateway > > So, is it possible to have bittorrent daemon with FIB=1 :-)? can you sendme teh output of: setfib -0 netstat -rn setfib -1 netstat -rn > _______________________________________________ > freebsd-net@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-net > To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org"
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