icmpv6 packet too big: mtu incorrectly formatted using %d instead of %u?

[Christian Theune]

Hi,

I just stumbled over this today:

> root@fc60 [prod] ~ # ping6 -s 1445 rzob-router.gocept.net
> PING rzob-router.gocept.net (2a02:248:101:63::1): 1445 data bytes
> 1240 bytes from 2a02:238:1:f030::2: Packet too big, mtu=-737869824

Looking at the code this seems to be a formatting issue where ping is using a 
%d instead of %u for an unsigned 32 bit integer.

I guess nobody really does send this big MTUs so it doesn’t normally matter, 
but my ISP is doing funny things today … le sigh.

Cheers and kind regards,
Christian Theune

--
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