26 lines
918 B
Diff
26 lines
918 B
Diff
Patch to stop l2tpd setting the DF bit on each of the packets it sends.
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Apart from not being useful with L2TP, this also prevents interoperating
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with Cisco IOS over IPSEC.
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--- l2tpd-0.70-pre20031121.orig/network.c.orig 2006-04-11 08:50:38.000000000 +0100
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+++ l2tpd-0.70-pre20031121.orig/network.c 2006-04-11 08:58:18.000000000 +0100
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@@ -56,6 +56,18 @@
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__FUNCTION__);
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return -EINVAL;
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};
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+#ifdef IP_MTU_DISCOVER
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+#ifdef IP_PMTUDISC_DONT
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+ {
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+ /* Don't set DF bit on outbound packets */
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+ int val = IP_PMTUDISC_DONT;
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+ if (setsockopt(server_socket, IPPROTO_IP, IP_MTU_DISCOVER, &val, sizeof(val)) < 0)
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+ {
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+ log (LOG_LOG, "Failed to disable PMTU discovery\n");
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+ }
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+ }
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+#endif
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+#endif
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/* L2TP/IPSec: Set up SA for listening port here? NTB 20011015
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*/
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if (bind (server_socket, (struct sockaddr *) &server, sizeof (server)))
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