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Subject2.2.0-pre1-ac3: Bizarre ppp MTU
I'm getting my PPP link reporting
UP POINTOPOINT RUNNING NOARP MULTICAST MTU:-1073716628 Metric:1
This MTU of 0xC000626C is, um, a little bit bizarre. I was looking
into why tcpdump had stopped working, put debugging into libpcap, saw
this number, traced it back to SIOCGIFMTU, tried ifconfig and... huh?

I haven't traced it into the kernel, but 2.1.131ac11 didn't do this.

Presumably it's something simple. (Oh, sticking a little "& 0xfffff"
into libpcap results in a working tcpdump. Not that *that* MTU is
resonable, either, but at least it's non-negative.)

pppd is from Debian ppp_2.3.5-2, dated June 19.
--
-Colin

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