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Date: Wed, 9 Jan 2013 10:51:40 +0100 (CET) From: Jan Engelhardt <jengelh@...i.de> To: "pupilla@...ero.it" <pupilla@...ero.it> cc: netdev@...r.kernel.org Subject: Re: mtu issue with ipsec tunnel and netfilter snat On Wednesday 2013-01-09 10:01, pupilla@...ero.it wrote: >As you can see there are incoming 1500 bytes packets (these are the >decrypted ipsec packets) with DF bit set. These packets are never >delivered to the final client 10.81.128.176 (the destination address >is 172.16.128.1 which is the ip used for SNATing the original ip >10.81.128.176). > >IMHO this is a mtu issue: 1500 bytes packets cannot be routed inside >the ipsec tunnel. > >But why linux_gw_snat is not sending icmp need to frag packets to >10.148.12.23? Perhaps because ICMP was blocked erroneously? -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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