[strongSwan] 5.0.1 unable to set UDP_ENCAP: Protocol not available
harvana2000 at yahoo.com
Fri Dec 7 20:22:31 CET 2012
I was trying to setup a IPv6 tunnel with strongSwan as the client. strongSwan sent the IKE_SA_INIT to my SGW and the SGW properly responded. Wireshark capture indicated that the IKE_SA_INIT response was received on the network interface that strongSwan was listening on, however the packet (IKE_SA_INIT response) was not handed over to charon, instead the packet was responded with a "ICMPv6 Unreachable (Administratively prohibited)". Any idea that the linux kernel can fail to distribute the packet to charon?
Examing the charon logs, I found the following errors:
charon: 00[KNL] unable to set UDP_ENCAP: Protocol not available
charon: 00[NET] enabling UDP decapsulation for IPv6 on port 4500 failed
Do those errors have anything to do with the failure to setup IPv6 tunnels?
I am currently running strongSwan 5.0.1. The IPv6 connection is:
Thanks for your help
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