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$ sudo make search name=avahi  
Port:   avahi-0.6.31p15
Path:   net/avahi,-main
Info:   framework for Multicast DNS Service Discovery
Maint:  Antoine Jacoutot <ajacoutot@openbsd.org>
Index:  net devel lang/mono lang/python
L-deps: STEM->=0.10.38:devel/gettext converters/libiconv databases/gdbm devel/glib2 devel/libdaemon x11/dbus
B-deps: STEM->=0.10.38:devel/gettext STEM->=0.41.1p0:textproc/intltool converters/xmltoman devel/gmake devel/gobject-introspection lang/mono lang/python/2.7 lang/python/2.7,-gdbm x11/dbus-python x11/mono-gtk2 x11/py-gtk2
R-deps: STEM->=0.10.38:devel/gettext
Archs:  any

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$ cd net/avahi
$ sudo make install BULK=yes

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$ sudo echo multicast_host=YES >> /etc/rc.conf.local

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if [ -x /usr/local/bin/dbus-daemon ]; then
  install -d -o _dbus -g _dbus /var/run/dbus
  echo -n " dbus"; /usr/local/bin/dbus-daemon --system
fi

if [ -x /usr/local/sbin/avahi-daemon ]; then
  echo -n '  avahi-daemon'; /usr/local/sbin/avahi-daemon -D
fi

if [ -x /usr/local/sbin/avahi-dnsconfd ]; then

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[server]
host-name=pyongyang
domain-name=local

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$ ping -c 3 pyongyang.local
PING pyongyang.local (192.168.0.103) 56(84) bytes of data.
64 bytes from pyongyang.local (192.168.0.103): icmp_req=1 ttl=255 time=0.942 ms
64 bytes from pyongyang.local (192.168.0.103): icmp_req=2 ttl=255 time=0.958 ms
64 bytes from pyongyang.local (192.168.0.103): icmp_req=3 ttl=255 time=0.900 ms

--- pyongyang.local ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2003ms
rtt min/avg/max/mdev = 0.900/0.933/0.958/0.034 ms
$ ssh pyongyang.local

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$ mount | grep tmp           
/dev/sd0d on /tmp type ffs (local, nodev, nosuid)
$ mount | grep var 
/dev/sd0e on /var type ffs (local, nodev, nosuid)

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$ cat /etc/fstab
bb5e5c361e094061.b none swap sw
bb5e5c361e094061.a / ffs rw 1 1
bb5e5c361e094061.l /home ffs rw,nodev,nosuid 1 2
#bb5e5c361e094061.d /tmp ffs rw,nodev,nosuid 1 2
bb5e5c361e094061.f /usr ffs rw,nodev 1 2
bb5e5c361e094061.g /usr/X11R6 ffs rw,nodev 1 2
bb5e5c361e094061.h /usr/local ffs rw,nodev 1 2
bb5e5c361e094061.k /usr/obj ffs rw,nodev,nosuid 1 2
bb5e5c361e094061.j /usr/src ffs rw,nodev,nosuid 1 2

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#include <avr/io.h>
#include <util/delay.h>

#define LED_ON _BV(PORTB5)
#define LED_OFF ~_BV(PORTB5);

int main () {
  DDRB |= _BV(DDB5);

  while(1) {

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avr-gcc -Os -DF_CPU=16000000UL -mmcu=atmega328p -o blink blink.c