Lease of 192.168.7.11 obtained, lease time 43200
run-parts: /etc/udhcpc.d/00avahi-autoipd exited with code 1
RTNETLINK answers: No such device
/etc/udhcpc.d/50default: Adding DNS 192.168.0.7
/etc/udhcpc.d/50default: Adding DNS 68.105.28.13
/etc/udhcpc.d/50default: Adding DNS 8.8.8.8
done.
Starting rpcbind daemon...rpcbind: cannot create socket for udp6
rpcbind: cannot create socket for tcp6
done.
net.ipv4.conf.default.rp_filter = 1
net.ipv4.conf.all.rp_filter = 1
Starting atd: OK
INIT: Entering runlevel: 5
Starting system message bus: dbus.
Starting OpenBSD Secure Shell server: sshd
done.
creating NFS state directory: done
NFS daemon support not enabled in kernel
Starting system log daemon...0
Starting kernel log daemon...0
 * Starting Avahi mDNS/DNS-SD Daemon: avahi-daemon                       [ ok ]
 * Starting Avahi Unicast DNS Configuration Daemon: avahi-dnsconfd       [ ok ]
Starting Lighttpd Web Server: lighttpd.
Starting crond: OK
Starting Network Interface Plugging Daemon: eth0.
Stopping Bootlog daemon: bootlogd.

Poky (Yocto Project Reference Distro) 1.5.4 mitysom-5cse /dev/ttyS0

mitysom-5cse login: root
root@mitysom-5cse:~# ls
build_info           fpgaddrtest  libcoap_test  udp
dev_5cse_l2_3y8.rbf  gpiotest     scripts_auto
root@mitysom-5cse:~# ./libcoap_test
Nov 08 01:08:32 EMRG coap_new_context: socket
no context available for interface '::'
root@mitysom-5cse:~#