On 23/11/2019 19:38, Joey Hess wrote: > Using ppp for the first time in a year or so, it seems something has > broken WRT defaultroute, which was working before.
Hi Joey, This seems surprising, or I'm sure I'd have heard much more about this by now. Curious. > There was no default route set before starting pppd. > After pon, this is the result: > > Kernel IP routing table > Destination Gateway Genmask Flags Metric Ref Use Iface > 0.0.0.0 0.0.0.0 0.0.0.0 U 0 0 0 ppp0 > 10.0.0.0 0.0.0.0 255.0.0.0 U 0 0 0 > wlx9cefd5fcd6f3 > 207.223.72.68 0.0.0.0 255.255.255.255 UH 0 0 0 ppp0 This looks like output from the old 'route' tool. Would you mind also providing output from 'ip route' as well, please? What is your PPP link running on? I don't expect it to be a modem, but is it PPPoE or PPTP or a VPN of some kind? That might also help to nail things down. > So apparently it's set a default route with no gateway, if that's even a > thing. It certianly does not work. PPP interfaces are point-to-point so it's perfectly valid to have a route with no gateway address and just the interface as a destination. There's no ARP on the PPP link, and any packets stuffed down the interface (should) end up on the other end. There's no notion of a router IP address on such links. > Manually adding 207.223.72.68 as the default gateway makes the connection > work. This doesn't make much sense to me, but a before and after of your route table using 'ip route' would be really helpful and might shed some light on the situation. [snip] > I enabled debug and didn't see anything in the log about routing. > Here's the relevant part of the log, after authentication > (log is in reverse order) No, ppp doesn't negotiate a default route, it's up to each end to add one as required. Hence the defaultroute / nodefaultroute options for pppd. Cheers, Chris -- Chris Boot bo...@debian.org
