Hi list First off: this is a "fixed" issue, in that I don't see the behaviour anymore, so time is not of the essence ;) . I'm only looking for an explanation, or for comments from other people who experienced this.
So the issue was some really strange behaviour on the part of dhcpcd. I completed a move a few weeks ago and got an internet connection last Wednesday (using a local cable company, that is, using a cable modem connected to via ethernet). I reconfigured my system to use regular DHCP (a relief after the PPPoE mess in the dorm), but dhcpcd could not apply the default route; it *obtained* one, but failed with "if_addroute: Invalid argument". I tried it manually, to no effect: "ip route" complained about invalid arguments, and I think plain "route" said "file exists", but I'm not sure anymore (either way, the error messages were less than clear). The funny thing is, I *could* set the default route, just not to the one advertised via DHCP, but to the x.y.z.2+ instead of x.y.z.1, which even gave me access to the internet part of the time. Now the funny thing is what fixed it: *commenting out the entirety of /etc/dhcpcd.conf* Then dhcpcd ran with default settings and could apply the default route. Even more bizarre is the fact that it kept working after uncommenting it again (and I track it with git, so I'm 100% sure I got it back to its original state). This leads me to believe that there was some (corrupted?) persistent state somewhere that got overwritten by starting dhcpcd after I commented out the file, but I have no clue where. Has anyone seen this sort of behaviour before, or anything similar to it? I searched for the error messages I was seeing, but couldn't find anything. I was using gentoo-sources-3.15.9 (now I'm at 3.16.6) and dhcpcd 6.4.3 at the time, but also had the issue with dhcpcd 6.4.7, to which I could upgrade by using the aforementioned x.y.z.2 gateway. Perhaps it was a bug in the kernel? But that's just guessing. Regards, -- Marc Joliet -- "People who think they know everything really annoy those of us who know we don't" - Bjarne Stroustrup
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