diff options
| author | nico <nico@3c298f89-4303-0410-b956-a3cf2f4a3e73> | 2006-04-12 00:17:43 +0000 |
|---|---|---|
| committer | nico <nico@3c298f89-4303-0410-b956-a3cf2f4a3e73> | 2006-04-12 00:17:43 +0000 |
| commit | 5a910c1d85d4fc4247073c16392d573bea3cff76 (patch) | |
| tree | 85043a51647b2449a705a5d05258cc97747c66ea /package/l2tpd/patches | |
| parent | 25347f6ae6fe8e8d832962b63eab48a7cd7937da (diff) | |
Prevent l2tpd from using PMTU discovery, setting the DF bit on all outgoing UDP packets (closes: #471)
git-svn-id: svn://svn.openwrt.org/openwrt/trunk/openwrt@3621 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'package/l2tpd/patches')
| -rw-r--r-- | package/l2tpd/patches/05-df-disable.patch | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/package/l2tpd/patches/05-df-disable.patch b/package/l2tpd/patches/05-df-disable.patch new file mode 100644 index 000000000..806c48d12 --- /dev/null +++ b/package/l2tpd/patches/05-df-disable.patch @@ -0,0 +1,25 @@ +Patch to stop l2tpd setting the DF bit on each of the packets it sends. +Apart from not being useful with L2TP, this also prevents interoperating +with Cisco IOS over IPSEC. + +--- l2tpd-0.70-pre20031121.orig/network.c.orig 2006-04-11 08:50:38.000000000 +0100 ++++ l2tpd-0.70-pre20031121.orig/network.c 2006-04-11 08:58:18.000000000 +0100 +@@ -56,6 +56,18 @@ + __FUNCTION__); + return -EINVAL; + }; ++#ifdef IP_MTU_DISCOVER ++#ifdef IP_PMTUDISC_DONT ++ { ++ /* Don't set DF bit on outbound packets */ ++ int val = IP_PMTUDISC_DONT; ++ if (setsockopt(server_socket, IPPROTO_IP, IP_MTU_DISCOVER, &val, sizeof(val)) < 0) ++ { ++ log (LOG_LOG, "Failed to disable PMTU discovery\n"); ++ } ++ } ++#endif ++#endif + /* L2TP/IPSec: Set up SA for listening port here? NTB 20011015 + */ + if (bind (server_socket, (struct sockaddr *) &server, sizeof (server))) |