Hello, Le 7 janv. 2014 à 12:37, Tore Anderson a écrit :
> Hi list, > > Does anyone know what tricks, if any, the major 6RD deployments (AT&T, > Free, Swisscom, others?) are using to alleviate any problems stemming > from the reduced IPv6 MTU? Some possibilities that come to mind are: > > * Having the 6RD CPE lower the TCP MSS value of SYN packets as they > enter/exit the tunnel device > * Having the 6RD BR lower the TCP MSS value in the same way as above > * Having the 6RD CPE advertise a lowered MTU to the LAN in RA Options For your information, i see an advertised mtu of 1480 on my WiFi interface with the Free CPE. > * Several (or all) of the above in combination > > Also, given that some ISPs offer [only] Layer-2 service and expect/allow > their customers to bring their own Layer-3 home gateway if they want > one, I would find it interesting to learn if any of the most common > off-the-shelf home gateway products (that enable 6RD by default) also > implement any such tricks by default or not. > Best regards Emmanuel Thierry
