Hi, I got a strange issue on my Mikrotik RB951-2hnd. To firmware this device you need to bootp on initramfs-vmlinux, erase partitions, scp rootfs and copy them to device. So I booted on vmlinux and network worked fine without any issues, I was able to copy files over ssh and firmware them and didn't even notice anything suspicious.
When I rebooted to just firmwared router I found out that my laptop didn't acquire an ip address from dhcp router's server. Lucky for me I have the uart port, so I logged via serial and system works properly. I uncomment wifi in /etc/network/wifi, and surprisingly I'm able to connect the router via wifi, ping, scp files etc. I reboot the router with serial connected and noticed that there were not any kernel error, nor logread errors either. ps shows that all required processes seem to be running.
So I dig a bit deeper. I run tcpdump on openwrt and wireshark on my laptop (previusly scp package over wifi (cause it's the only working thing in my network) and installed it).My laptop sends packages to mikrotik including dhcprequest, but router's tcpdump shows only included in code section bellow. ps. I'm using bleeding edge (latest developers revision)).
I also tried to firmware the router from downloads.openwrt.org image but it has the same issue (vmlinux-initramfs works on it too) . What should I try next? I don't even know where I should be looking for, because there're no errors. I also had been running openwrt on this device before (12.04), but I had some issues with rebooting every 5 hours nevertheless network worked perfectly. Seems like rebooting issue is gone now.
[09:34:15.779328 IP6 fe80::d6ca:6dff:fe92:a47e > ff02::1: HBH ICMP6, multicast listener querymax resp delay: 10000 addr: ::, length 24
09:34:15.869302 IP6 fe80::d6ca:6dff:fe92:a47e > ff02::1:ff00:0: HBH ICMP6, multicast listener reportmax resp delay: 0 addr: ff02::1:ff00:0, length 24
09:34:19.719294 IP6 fe80::d6ca:6dff:fe92:a47e > ff05::1:3: HBH ICMP6, multicast listener reportmax resp delay: 0 addr: ff05::1:3, length 24
09:34:22.059297 IP6 fe80::d6ca:6dff:fe92:a47e > ff02::2: HBH ICMP6, multicast listener reportmax resp delay: 0 addr: ff02::2, length 24
09:34:23.479305 IP6 fe80::d6ca:6dff:fe92:a47e > ff02::1:ff92:a47e: HBH ICMP6, multicast listener reportmax resp delay: 0 addr: ff02::1:ff92:a47e, length 24
09:34:23.559283 IP6 fe80::d6ca:6dff:fe92:a47e > ff02::1:ff00:1: HBH ICMP6, multicast listener reportmax resp delay: 0 addr: ff02::1:ff00:1, length 24
09:34:24.139291 IP6 fe80::d6ca:6dff:fe92:a47e > ff02::1:2: HBH ICMP6, multicast listener reportmax resp delay: 0 addr: ff02::1:2, length 24