Hey everyone,
I decided after many year to try again to slap OpenBSD on my old Acer Aspire one. The Wifi adapter is not supported, but I was thinking about using my phone to get network connectivity out of it. Unfortunately I’m hitting a strange behavior: ifconfig urndis0 autoconf works as expected, and I get an IP over DHCP. Ping and DNS resolution work as expected, but when I try any TCP connection, the connectivity simply stops working, and I cannot even ping the gateway anymore. dmesg doesn’t say anything about it.
Has anyone encountered this already ?
Hm… You could try tcpdump(8), e.g.
tcpdump -i urndis0; there might be some hints there as you do a ping, then DNS lookup, then try to establish a TCP connection.If it’s just TCP, it would be interesting to see if routing all traffic through a WireGuard tunnel with wg(4) prevents the connection to the gateway from falling over. That’s not really a solution but it could be an interesting test.
Finally, from ifconfig(8), it looks like you can enable per-driver debug mode. I think
ifconfig urndis0 debugwill enable it.I’ll try the
debugcommand for ifconfig eventually. I took the hardest path to fix this issue however as I scrapped a supported wireless card from another computer and installed it on the netbook. Now it has wifi natively hehe. Thanks for your help!
I saw some behavior like this in networks where I created an L2 adjacency between the gateway and two downstream dhcp-configured LAN devices, when the gateway was apparently configured to demand that there only be a single one.
In my case the setup is fairly straightforward though. There’s my phone and the netbook. I suspect an issue with the driver, so I’ll check it further.
