pppoe routing problem, default route isnt used for some hosts

[Fabian Holler]

Hello,

I have an strange routing problem. I can't connect to some hosts in the
internet till I add an explicit route for this hosts with my default gw
as gateway.
There aren't any other routes that could match the destination IP for
"non-working hosts". So the connection should also without an explicit
route for this Hosts use the default gw.

My Setup:
FreeBSD 7.2-RELEASE
mppd to make an PPPOE connection to my internet service
provider.
PF as firewall

To isolate the problem I used an minimal pf.conf:
---
"inetif=ng0
lanif=vr0

scrub all max-mss 1492
pass quick on lo0 all
pass out on $inetif proto { tcp udp icmp } all keep state"
pass on $lanif from any to any
---
I also tried pppd instead of mppd(dont helps).


Hosts that I can't connect to, are ie spiegel.de, tagesschau.de, freebsd.org
southparkstudios.com
I.e
TCP connections to Port 80 of southparkstudios.com dont work.
If I add an explicit route:
"route add southparkstudios.com 213.191.84.199"
Connections with nc to port 80 works
(the connections tests are made from the router, the iface MTUs are correct)

Anybody have an idea what could be wrong?

I have no idea anymore
(its also not an provider problem, when i made the pppoe connection from windows I can connect to alls hosts)


thanks for any hints:)

best regards

Fabian


-------------------------------------
My routing table:
"
# netstat -ra
Routing tables

Internet:
Destination        Gateway            Flags    Refs      Use  Netif Expire
default            lo1.br04.weham.de. UGS         0    15505    ng0
1.1.1.1&0x1010101  link#1             UC          0        0    rl0
exxx45031.adsl.al lo0                UHS         0        0    lo0
localhost          localhost          UH          0      433    lo0
192.168.113.0      link#2             UC          0        0    vr0
xyz         00:30:18:ad:26:88  UHLW        1    24005    lo0
mail.xyz.ath.cx 00:30:18:ad:26:88  UHLW        1    86400    lo0
http.xyz.ath.cx 00:30:18:ad:26:88  UHLW        1      770    lo0
192.168.113.255    ff:ff:ff:ff:ff:ff  UHLWb       1     3228    vr0
lo1.br04.weham.de. e176145031.adsl.al UH          1        0    ng0

[... ipv6 stuff]
"

Interface infos:
"
# netstat -ira
Name    Mtu Network       Address              Ipkts Ierrs    Opkts Oerrs  Coll
rl0    1492 <Link#1>      00:02:2a:b0:4a:e0 26128479     0 19855993     0     0
                          01:00:5e:00:00:01        0              0
rl0    1492 1.1.1.1&0x101 1.1.1.1                  0     -     2653     -     -
                          ALL-SYSTEMS.MCAST
vr0    1500 <Link#2>      00:30:18:ad:26:88 12662831     0 17678949     0     0
                          01:00:5e:00:00:01     2038              0
vr0    1500 192.168.113.0 xyz         9745471     - 13639692     -     -
                          ALL-SYSTEMS.MCAST
vr0    1500 192.168.113.0 mail.xyz.a   291626     -    86404     -     -
                          ALL-SYSTEMS.MCAST
vr0    1500 192.168.113.0 http.xyz.a     6814     -      770     -     -
                          ALL-SYSTEMS.MCAST
lo0   16384 <Link#3>                          113929     0   113929     0     0
lo0   16384 fe80:3::1     fe80:3::1                0     -        0     -     -
                          ff01:3::1          (refs: 1)
                          ff02:3::2:a61d:93b4(refs: 1)
                          ff02:3::1          (refs: 1)
                          ff02:3::1:ff00:1   (refs: 1)
lo0   16384 localhost     ::1                      0     -        0     -     -
                          ff01:3::1          (refs: 1)
                          ff02:3::2:a61d:93b4(refs: 1)
                          ff02:3::1          (refs: 1)
                          ff02:3::1:ff00:1   (refs: 1)
lo0   16384 your-net      localhost              433     -     2433     -     -
                          ALL-SYSTEMS.MCAST
pflog 33204 <Link#4>                               0     0    80567     0     0
tun0*  1500 <Link#5>                           78331     0    76381     0     0
tun99  1500 <Link#6>                             353     0      375     0     0
ng0    1492 <Link#7>                        17114096     0 13449463     0     0
ng0    1492 85.176.145.31 e176145031.adsl.a    12398     -    17011     -     -
                          ALL-SYSTEMS.MCAST
"

mpd.conf:
"
default:
        load PPPoE
PPPoE:
        new -i ng0 PPPoE PPPoE
        set iface addrs 1.1.1.1 2.2.2.2
        set iface route default
        set iface enable on-demand
        set iface idle 0
        set bundle disable multilink
        set bundle authname "xxy"
        set iface disable tcpmssfix
        set link no acfcomp protocomp
        set link disable pap chap
        set link accept chap
        set link mtu 1492
        set link mru 1492
        set link keep-alive 10 60
        set ipcp yes vjcomp
        set iface enable tcpmssfix#I know pf also do this in my setup, but Iam despaired:)
        set ipcp ranges 0.0.0.0/0 0.0.0.0/0
        set nat disable
        log +link
        open iface
"
mpd.links:
"PPPoE:  
        set link type pppoe
        set pppoe iface rl0
        set pppoe disable incoming
        set pppoe enable originate
"
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