the correct ipv6 behavior for interfaces with gif tunnel on them

[Konstantin KABASSANOV]

Hello,

I have a freebsd box with a gif tunnel configured. I observed that even if
ifconfig displays MTU 1500 for both gif and physical interface, 1300 bytes
ipv6 packets transiting on the gif interface are systematically fragmented
while transiting on the lower physical interface to 1280 bytes. Is it the
normal behavior?

Thanks.

Konstantin

_________________________________

Konstantin K. KABASSANOV

LIP6/CNRS
8, rue du Capitaine Scott
75015 Paris, France

Phone: +33 (0) 1 44 27 71 26
Fax:   +33 (0) 1 44 27 74 95

E-mail: konstantin at kabassanov.com
Web: http://www.kabassanov.com
_________________________________


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