Bug#433307: linux-image-2.6-k7: pptp vpn broken after upgrade from 2.6.18 to 2.6.21
Package: linux-image-2.6-k7
Version: 2.6.21+8
Severity: important
Internet connection stops working after upgrade: dns and ping work,
http, pop3, and imap clients manage to connect but timeout when
waiting for remote data.
I also can't connect to the box with either ssh or web client.
Connection type: pptp via usb cable modem.
Partial workaround: lower MTU of ppp0 from default 1500 to 512 (!).
This reduces download speed by ~40% (compared to 2.6.18 kernel),
but otherwise web access seems functional.
More configuration info:
computer: Compaq Presario 900 laptop (Mobile AMD Athlon(tm) XP 1500+)
cable modem: Thomson DCM245 (handled by usbnet module cdc_ether)
firewall disabled ("iptables --list" shows no chains)
ifconfig and route output is similar on both kernels (ip's removed),
except for error count on eth1:
eth1 Link encap:Ethernet HWaddr hh:hh:hh:hh:hh:hh
inet addr:xx.xx.xx.xx Bcast:255.255.255.255 Mask:255.255.224.0
UP BROADCAST RUNNING MULTICAST MTU:576 Metric:1
RX packets:2075 errors:107 dropped:0 overruns:0 frame:107
TX packets:1141 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:331521 (323.7 KiB) TX bytes:121522 (118.6 KiB)
ppp0 Link encap:Point-to-Point Protocol
inet addr:yy.yy.yy.yy P-t-P:pp.pp.pp.pp Mask:255.255.255.255
UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1500 Metric:1
RX packets:673 errors:0 dropped:0 overruns:0 frame:0
TX packets:758 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:3
RX bytes:96006 (93.7 KiB) TX bytes:56269 (54.9 KiB)
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
pp.pp.pp.pp * 255.255.255.255 UH 0 0 0 ppp0
pp.pp.pp.pp gg.gg.gg.gg 255.255.255.255 UGH 0 0 0 eth1
10.0.0.0 * 255.255.255.0 U 0 0 0 eth0
xx.xx.192.0 * 255.255.224.0 U 0 0 0 eth1
default * 0.0.0.0 U 0 0 0 ppp0
(eth0 is a local ethernet adapter)
(a route to the pptp server, thru the isp's local loop gateway is added when
eth1 is brought up:
/sbin/route add -host pp.pp.pp.pp gw gg.gg.gg.gg )
content of options.pptp:
debug
lock
noauth
nobsdcomp
nodeflate
lcp-echo-failure 10
lcp-echo-interval 20
noipdefault
hide-password
usepeerdns
persist
holdoff 60
maxfail 0
defaultroute
replacedefaultroute
-- System Information:
Debian Release: lenny/sid
APT prefers testing
APT policy: (990, 'testing'), (500, 'unstable')
Architecture: i386 (i686)
Kernel: Linux 2.6.18-4-k7 (SMP w/1 CPU core)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash
Versions of packages linux-image-2.6-k7 depends on:
ii linux-image-2.6.21-2-k7 2.6.21-6 Linux 2.6.21 image on AMD K7
linux-image-2.6-k7 recommends no packages.
-- no debconf information
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