Hi I'm trying to write a module for a real-time kernel. Following the instructions on https://eewiki.net/display/linuxonarm/BeagleBone+Black, I compiled and deployed a 4.1.13-bone-rt-r17 kernel to an sd card with a Debian GNU/Linux 7 BeagleBoard.org Debian Image 2015-03-01.
Before, with kernel 3.8.13-bone70, everything was working perfectly fine. However after upgrading the kernel, my desktop (running Linux Mint) no longer receives an ip address. ifconfig beaglebone: usb0 Link encap:Ethernet HWaddr a2:29:c5:ee:bf:e6 > inet addr:192.168.7.2 Bcast:192.168.7.3 Mask:255.255.255.252 > inet6 addr: fe80::a029:c5ff:feee:bfe6/64 Scope:Link > UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 > RX packets:1 errors:0 dropped:0 overruns:0 frame:0 > TX packets:37 errors:0 dropped:0 overruns:0 carrier:0 > collisions:0 txqueuelen:1000 > RX bytes:76 (76.0 B) TX bytes:9408 (9.1 KiB) > ifconfig desktop: eth1 Link encap:Ethernet HWaddr 84:eb:18:ae:cb:aa > inet6 addr: fe80::86eb:18ff:feae:cbaa/64 Scope:Link > UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 > RX packets:37 errors:0 dropped:0 overruns:0 frame:0 > TX packets:2 errors:0 dropped:0 overruns:0 carrier:0 > collisions:0 txqueuelen:1000 > RX bytes:7262 (7.2 KB) TX bytes:268 (268.0 B) > manually assigning an ip does not do the trick. When pinging the desktop from the beaglebone (with or without manually assigning an ip), i can catch the requests using tcpdump. The beaglebone does however not receive anything, no answers to pings, nothing showing up in tcpdump. fdalbert@edge ~ $ sudo tcpdump -i eth1 > tcpdump: WARNING: eth1: no IPv4 address assigned > tcpdump: verbose output suppressed, use -v or -vv for full protocol decode > listening on eth1, link-type EN10MB (Ethernet), capture size 65535 bytes > 15:01:10.597986 ARP, Request who-has 192.168.7.1 tell 192.168.7.2, length > 28 > 15:01:11.588800 ARP, Request who-has 192.168.7.1 tell 192.168.7.2, length > 28 > 15:01:12.588895 ARP, Request who-has 192.168.7.1 tell 192.168.7.2, length > 28 > 15:01:13.597976 ARP, Request who-has 192.168.7.1 tell 192.168.7.2, length > 28 > 15:01:14.588800 ARP, Request who-has 192.168.7.1 tell 192.168.7.2, length > 28 > 15:01:15.588772 ARP, Request who-has 192.168.7.1 tell 192.168.7.2, length > 28 > 15:01:16.597983 ARP, Request who-has 192.168.7.1 tell 192.168.7.2, length > 28 > 15:01:17.588936 ARP, Request who-has 192.168.7.1 tell 192.168.7.2, length > 28 > 15:01:18.588919 ARP, Request who-has 192.168.7.1 tell 192.168.7.2, length > 28 > ^C > 9 packets captured > 9 packets received by filter > 0 packets dropped by kernel > root@beaglebone:~# ping 192.168.7.1 > PING 192.168.7.1 (192.168.7.1) 56(84) bytes of data. > From 192.168.7.2 icmp_seq=1 Destination Host Unreachable > From 192.168.7.2 icmp_seq=2 Destination Host Unreachable > From 192.168.7.2 icmp_seq=3 Destination Host Unreachable > From 192.168.7.2 icmp_seq=4 Destination Host Unreachable > From 192.168.7.2 icmp_seq=5 Destination Host Unreachable > From 192.168.7.2 icmp_seq=6 Destination Host Unreachable > From 192.168.7.2 icmp_seq=7 Destination Host Unreachable > From 192.168.7.2 icmp_seq=8 Destination Host Unreachable > From 192.168.7.2 icmp_seq=9 Destination Host Unreachable > From 192.168.7.2 icmp_seq=10 Destination Host Unreachable > From 192.168.7.2 icmp_seq=11 Destination Host Unreachable > From 192.168.7.2 icmp_seq=12 Destination Host Unreachable > ^C > --- 192.168.7.1 ping statistics --- > 14 packets transmitted, 0 received, +12 errors, 100% packet loss, time > 13001ms > pipe 3 > root@beaglebone:~# tcpdump -i usb0 > tcpdump: verbose output suppressed, use -v or -vv for full protocol decode > listening on usb0, link-type EN10MB (Ethernet), capture size 65535 bytes > ^C > 0 packets captured > 0 packets received by filter > 0 packets dropped by kernel > I already spent hours trying to figure out the problem here, any help is greatly appreciated! -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
