This one time, at band camp, Thomas Nguyen Van said: > Morning, > > I installed a server with Linux distribution 2.6.26-1-686 and an ADSL > card Sangoma S518. This server is protecting a subnetwork with FIAIF. > > The MTU agreed with the ISP is MTU = 1492. However, per default I got > a routing problem because the MTU defined for my subnetwork is MTU = > 1500. Then it generates Path MTU discovery failure. > > Then I had to add the following rule in my iptable: iptables -t mangle > -A PREROUTING -p tcp --tcp-flags SYN,RST SYN -i eth0 -j TCPMSS > --set-mss 1400 > > However, I currently use FIAIF and I would prefer to translate this > iptable rule in a FIAIF's language. > > Does anyone know how to do that? Don't drop ICMP fragmentation needed packets on the LAN side and then it will autonegotiate PMTU? -- ----------------------------------------------------------------- | ,''`. Stephen Gran | | : :' : sgran@debian.org | | `. `' Debian user, admin, and developer | | `- http://www.debian.org | -----------------------------------------------------------------
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