Re: [OpenWrt-Devel] IPIP6 Fragmentation

2013-11-06 Thread Gert Doering
Hi, On Wed, Nov 06, 2013 at 04:43:54AM -0500, Pietro Paolini wrote: > > So you want "IPv4 in IPv6, and you want to see fragmentation on the IPv6 > > packets". > > > What happens if you put the tun1 mtu to 1500? > > In that case it does not fragment the IPv4 packet but the whole packet is > disc

Re: [OpenWrt-Devel] IPIP6 Fragmentation

2013-11-06 Thread Pietro Paolini
-Original Message- From: Gert Doering To: Pietro Paolini Cc: gert ; openwrt-devel ; p.paolini Sent: Wed, Nov 6, 2013 9:34 am Subject: Re: [OpenWrt-Devel] IPIP6 Fragmentation Hi, On Wed, Nov 06, 2013 at 03:20:45AM -0500, Pietro Paolini wrote: > Hi, > no hope :-( > I tried

Re: [OpenWrt-Devel] IPIP6 Fragmentation

2013-11-06 Thread Gert Doering
Hi, On Wed, Nov 06, 2013 at 03:20:45AM -0500, Pietro Paolini wrote: > Hi, > no hope :-( > I tried with 1300 without success. > > > What make me worry is that in the Kernel, referring at the graph > http://open-source.arkoon.net/kernel/kernel_net.png > the fragmentation is performed in the ip_f

Re: [OpenWrt-Devel] IPIP6 Fragmentation

2013-11-06 Thread Pietro Paolini
Nov 5, 2013 4:33 pm Subject: Re: [OpenWrt-Devel] IPIP6 Fragmentation Hi, try reducing the tun1 mtu further, to see whether it makes the issue go away - I'm not sure right now if "40" is the right size for ipipv6 (it's the extra IPv4 headers that you need to count, not th

Re: [OpenWrt-Devel] IPIP6 Fragmentation

2013-11-05 Thread Gert Doering
ed by the IPv4 Stack even if the MTU 1500 vs 1460 > (40 is the size of ipv6 headers) > > > Any ideas ? > > > > > > Pietro Paolini > pulsarpie...@aol.com > > > > > -Original Message- > From: Gert Doering > To: OpenWrt Develo

Re: [OpenWrt-Devel] IPIP6 Fragmentation

2013-11-05 Thread Pietro Paolini
00 vs 1460 (40 is the size of ipv6 headers) Any ideas ? Pietro Paolini pulsarpie...@aol.com -Original Message- From: Gert Doering To: OpenWrt Development List Sent: Tue, Nov 5, 2013 12:02 pm Subject: Re: [OpenWrt-Devel] IPIP6 Fragmentation Hi, On Mon, Nov 04, 2013 at 07:52:57

Re: [OpenWrt-Devel] IPIP6 Fragmentation

2013-11-05 Thread Gert Doering
Hi, On Mon, Nov 04, 2013 at 07:52:57AM -0500, Pietro Paolini wrote: > I am working for an embedded Linux firmware running on a CPE and I am > using an IP4 over IPv6 tunnel configured as following: > > ip -f inet6 tunnel add tun1 mode ipip6 remote XX:XX:XX local XX:XX:XX > dev eth0 By setting a