Here's the output of "sudo tcpdump -i en1":
07:47:36.627898 IP 0.0.0.0.bootpc > broadcasthost.bootps: BOOTP/DHCP, Request from 00:14:51:ed:85:f4 (oui Unknown), length: 300
07:47:36.628950 IP6 shemp.local > ff02::2: ICMP6, router solicitation, length 16
07:47:36.629327 EAP code=1 id=0 length=5
07:47:37.043498 EAP code=1 id=0 length=10
07:47:37.047205 EAP code=1 id=0 length=6
07:47:37.060174 EAP code=1 id=0 length=102
07:47:37.069127 EAP code=1 id=0 length=695
07:47:37.072200 EAP code=1 id=0 length=208
07:47:37.084486 EAP code=1 id=0 length=53
07:47:37.137792 EAP code=1 id=0 length=6
07:47:37.140848 EAP code=1 id=0 length=32
07:47:37.141130 EAP code=1 id=0 length=37
07:47:37.144567 EAP code=1 id=0 length=72
07:47:37.171482 EAP code=1 id=0 length=91
07:47:37.409497 EAP code=1 id=0 length=78
07:47:37.409939 EAP code=1 id=0 length=33
07:47:37.413227 EAP code=1 id=0 length=42
07:47:37.413479 EAP code=1 id=0 length=42
07:47:37.416847 EAP code=1 id=0 length=4
07:47:37.418042 EAP code=1 id=3 length=57
07:47:37.419351 EAP code=1 id=3 length=57
07:47:37.586542 IP6 shemp.local.50450 > ff02::fb.mdns: 43226+[|domain]
07:47:38.087372 IP6 shemp.local.50450 > ff02::fb.mdns: 43226+[|domain]
07:47:38.277954 IP6 shemp.local > ff02::2: ICMP6, router solicitation, length 16
07:47:38.386978 IP 0.0.0.0.bootpc > broadcasthost.bootps: BOOTP/DHCP, Request from 00:14:51:ed:85:f4 (oui Unknown), length: 300
07:47:38.588187 IP6 shemp.local.50450 > ff02::fb.mdns: 43226+[|domain]
07:47:39.045606 IP6 shemp.local > ff02::fb: HBH ICMP6, multicast listener reportmax resp delay: 0 addr: ff02::fb, length 24
07:47:39.047090 IP6 shemp.local.mdns > ff02::fb.mdns: 0 [4q][|domain]
07:47:39.088988 IP6 shemp.local.50450 > ff02::fb.mdns: 43226+[|domain]
07:47:39.294936 IP6 shemp.local.mdns > ff02::fb.mdns: 0 [2q] [2n][|domain]
07:47:39.545007 IP6 shemp.local.mdns > ff02::fb.mdns: 0 [2q] [2n][|domain]
07:47:39.794849 IP6 shemp.local.mdns > ff02::fb.mdns: 0 [2q] [2n][|domain]
07:47:40.045786 IP6 shemp.local.mdns > ff02::fb.mdns: 0*- [0q] 7/0/0[|domain]
07:47:40.146505 IP6 shemp.local.mdns > ff02::fb.mdns: 0 [4q][|domain]
07:47:40.694774 IP 0.0.0.0.bootpc > broadcasthost.bootps: BOOTP/DHCP, Request from 00:14:51:ed:85:f4 (oui Unknown), length: 300
07:47:40.695474 arp who-has 169.254.155.120 tell 0.0.0.0
07:47:40.995721 arp who-has 169.254.155.120 tell 0.0.0.0
07:47:41.046483 IP6 shemp.local.mdns > ff02::fb.mdns: 0*- [0q] 7/0/0[|domain]
07:47:41.124580 IP6 shemp.local > ff02::2: ICMP6, router solicitation, length 16
07:47:41.296071 arp who-has 169.254.155.120 tell 0.0.0.0
07:47:41.342744 IP6 shemp.local.50454 > ff02::fb.mdns: 40726+[|domain]
07:47:41.596798 arp who-has 169.254.155.120 tell 0.0.0.0
07:47:41.843474 IP6 shemp.local.50454 > ff02::fb.mdns: 40726+[|domain]
07:47:41.897162 arp who-has 169.254.155.120 tell 169.254.155.120
07:47:42.146566 IP6 shemp.local.mdns > ff02::fb.mdns: 0 [4q][|domain]
07:47:42.197782 arp who-has 169.254.155.120 tell 169.254.155.120
07:47:42.222286 IP 169.254.155.120.50456 > 224.0.0.251.mdns: 64503+ PTR? 120.155.254.169.in-addr.arpa. (46)
07:47:42.222298 IP 169.254.155.120.50455 > 224.0.0.251.mdns: 33268+ PTR? 120.155.254.169.in-addr.arpa. (46)
07:47:42.473168 IP6 shemp.local.50457 > ff02::fb.mdns: 64503+[|domain]
07:47:42.473279 IP6 shemp.local.50458 > ff02::fb.mdns: 33268+[|domain]
07:47:42.723505 IP 169.254.155.120.50456 > 224.0.0.251.mdns: 64503+ PTR? 120.155.254.169.in-addr.arpa. (46)
07:47:42.723608 IP 169.254.155.120.50455 > 224.0.0.251.mdns: 33268+ PTR? 120.155.254.169.in-addr.arpa. (46)
07:47:42.974329 IP6 shemp.local.50458 > ff02::fb.mdns: 33268+[|domain]
07:47:42.974348 IP6 shemp.local.50457 > ff02::fb.mdns: 64503+[|domain]
07:47:43.224776 IP 169.254.155.120.50456 > 224.0.0.251.mdns: 64503+ PTR? 120.155.254.169.in-addr.arpa. (46)
07:47:43.224787 IP 169.254.155.120.50455 > 224.0.0.251.mdns: 33268+ PTR? 120.155.254.169.in-addr.arpa. (46)
07:47:43.271661 00:0c:f1:1c:80:94 (oui Unknown) Unknown SSAP 0x46 > Broadcast Unknown DSAP 0xc8 Supervisory, Receiver not Ready, rcv seq 112, Flags [Command], length 215
07:47:43.475519 IP6 shemp.local.50457 > ff02::fb.mdns: 64503+[|domain]
07:47:43.475746 IP6 shemp.local.50458 > ff02::fb.mdns: 33268+[|domain]
07:47:43.725778 IP 169.254.155.120.50456 > 224.0.0.251.mdns: 64503+ PTR? 120.155.254.169.in-addr.arpa. (46)
07:47:43.726057 IP 169.254.155.120.50455 > 224.0.0.251.mdns: 33268+ PTR? 120.155.254.169.in-addr.arpa. (46)
07:47:43.976364 IP6 shemp.local.50457 > ff02::fb.mdns: 64503+[|domain]
07:47:43.976671 IP6 shemp.local.50458 > ff02::fb.mdns: 33268+[|domain]
07:47:44.213546 IP6 shemp.local > ff02::fb: HBH ICMP6, multicast listener reportmax resp delay: 0 addr: ff02::fb, length 24
07:47:44.216273 IP6 shemp.local > ff02::2: HBH ICMP6, multicast listener donemax resp delay: 0 addr: ff02::fb, length 24
07:47:44.216458 IP6 shemp.local > ff02::fb: HBH ICMP6, multicast listener reportmax resp delay: 0 addr: ff02::fb, length 24
07:47:44.216606 IP 169.254.155.120 > 224.0.0.251: igmp v2 report 224.0.0.251
07:47:44.218190 IP 169.254.155.120.mdns > 224.0.0.251.mdns: 0 [9q] PTR (Cache flush)?
afpovertcp.tcp.local. PTR (Cache flush)?
nfs.tcp.local.[|domain]
07:47:44.218266 IP6 shemp.local.mdns > ff02::fb.mdns: 0 [9q][|domain]
07:47:44.465943 IP 169.254.155.120.mdns > 224.0.0.251.mdns: 0 [3q] [3n][|domain]
07:47:44.466047 IP6 shemp.local.mdns > ff02::fb.mdns: 0 [3q] [3n][|domain]
07:47:44.716794 IP 169.254.155.120.mdns > 224.0.0.251.mdns: 0 [3q] [3n][|domain]
07:47:44.716888 IP6 shemp.local.mdns > ff02::fb.mdns: 0 [3q] [3n][|domain]
07:47:44.967659 IP 169.254.155.120.mdns > 224.0.0.251.mdns: 0 [3q] [3n][|domain]
07:47:44.967747 IP6 shemp.local.mdns > ff02::fb.mdns: 0 [3q] [3n][|domain]
07:47:45.085904 IP 0.0.0.0.bootpc > broadcasthost.bootps: BOOTP/DHCP, Request from 00:14:51:ed:85:f4 (oui Unknown), length: 300
07:47:45.217485 IP 169.254.155.120.mdns > 224.0.0.251.mdns: 0*- [0q] 9/0/0[|domain]
07:47:45.217553 IP6 shemp.local.mdns > ff02::fb.mdns: 0*- [0q] 9/0/0[|domain]
07:47:45.222563 IP 169.254.155.120.50459 > 239.255.255.253.svrloc: UDP, length 36
07:47:45.222760 IP 169.254.155.120.50460 > 239.255.255.253.svrloc: UDP, length 36
07:47:45.223294 IP 169.254.155.120.50461 > 239.255.255.253.svrloc: UDP, length 36
07:47:45.223517 IP 169.254.155.120.50462 > 239.255.255.253.svrloc: UDP, length 36
07:47:45.263411 IP6 shemp.local > ff02::2: ICMP6, router solicitation, length 16
07:47:45.317246 IP 169.254.155.120.mdns > 224.0.0.251.mdns: 0 [9q] PTR?
afpovertcp.tcp.local. PTR?
nfs.tcp.local.[|domain]
07:47:45.317333 IP6 shemp.local.mdns > ff02::fb.mdns: 0 [9q][|domain]
07:47:46.217189 IP 169.254.155.120.mdns > 224.0.0.251.mdns: 0*- [0q] 9/0/0[|domain]
07:47:46.217286 IP6 shemp.local.mdns > ff02::fb.mdns: 0*- [0q] 9/0/0[|domain]
07:47:46.225262 IP 169.254.155.120 > 224.0.0.251: igmp v2 report 224.0.0.251
07:47:47.205311 IP 169.254.155.120.50463 > 239.255.255.253.svrloc: UDP, length 49
07:47:47.221170 IP 169.254.155.120.50463 > 239.255.255.253.svrloc: UDP, length 49
07:47:47.317340 IP 169.254.155.120.mdns > 224.0.0.251.mdns: 0 [9q] PTR?
afpovertcp.tcp.local. PTR?
nfs.tcp.local.[|domain]
07:47:47.317454 IP6 shemp.local.mdns > ff02::fb.mdns: 0 [9q][|domain]
07:47:48.217422 IP 169.254.155.120.mdns > 224.0.0.251.mdns: 0*- [0q] 9/0/0[|domain]
07:47:48.217525 IP6 shemp.local.mdns > ff02::fb.mdns: 0*- [0q] 9/0/0[|domain]
07:47:48.272224 IP 169.254.155.120.50464 > 169.254.255.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
07:47:48.411195 IP 169.254.155.120.50465 > 224.0.0.251.mdns: 11015+ PTR? 255.255.254.169.in-addr.arpa. (46)
07:47:48.543113 IP 169.254.155.120.50464 > 169.254.255.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
07:47:48.661764 IP6 shemp.local.50466 > ff02::fb.mdns: 11015+[|domain]
07:47:48.813836 IP 169.254.155.120.50464 > 169.254.255.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
07:47:48.912041 IP 169.254.155.120.50465 > 224.0.0.251.mdns: 11015+ PTR? 255.255.254.169.in-addr.arpa. (46)
07:47:49.162570 IP6 shemp.local.50466 > ff02::fb.mdns: 11015+[|domain]
07:47:49.227082 IP 169.254.155.120.50467 > 239.255.255.253.svrloc: UDP, length 36
07:47:49.229669 IP 169.254.155.120.50468 > 239.255.255.253.svrloc: UDP, length 36
07:47:49.229866 IP 169.254.155.120.50469 > 239.255.255.253.svrloc: UDP, length 36
07:47:49.229960 IP 169.254.155.120.50470 > 239.255.255.253.svrloc: UDP, length 36
07:47:49.274397 IP 169.254.155.120.50471 > 169.254.255.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
07:47:49.412901 IP 169.254.155.120.50465 > 224.0.0.251.mdns: 11015+ PTR? 255.255.254.169.in-addr.arpa. (46)
07:47:49.545217 IP 169.254.155.120.50471 > 169.254.255.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
07:47:49.663458 IP6 shemp.local.50466 > ff02::fb.mdns: 11015+[|domain]
07:47:49.815955 IP 169.254.155.120.50471 > 169.254.255.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
07:47:49.913818 IP 169.254.155.120.50465 > 224.0.0.251.mdns: 11015+ PTR? 255.255.254.169.in-addr.arpa. (46)
07:47:50.140790 IP 169.254.155.120.50472 > 169.254.255.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
07:47:50.164378 IP6 shemp.local.50466 > ff02::fb.mdns: 11015+[|domain]
07:47:50.222774 IP 169.254.155.120.50473 > 239.255.255.253.svrloc: UDP, length 68
07:47:50.411764 IP 169.254.155.120.50472 > 169.254.255.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
07:47:50.682525 IP 169.254.155.120.50472 > 169.254.255.255.netbios-ns: NBT UDP PACKET(137): QUERY; REQUEST; BROADCAST
07:47:51.260186 IP6 shemp.local > ff02::fb: HBH ICMP6, multicast listener reportmax resp delay: 0 addr: ff02::fb, length 24
07:47:51.317247 IP 169.254.155.120.mdns > 224.0.0.251.mdns: 0 [9q] PTR?
afpovertcp.tcp.local. PTR?
nfs.tcp.local.[|domain]
07:47:51.317316 IP6 shemp.local.mdns > ff02::fb.mdns: 0 [9q][|domain]
07:47:52.217151 IP 169.254.155.120.mdns > 224.0.0.251.mdns: 0*- [0q] 9/0/0[|domain]
07:47:52.217272 IP6 shemp.local.mdns > ff02::fb.mdns: 0*- [0q] 9/0/0[|domain]
07:47:52.223003 IP 169.254.155.120.50459 > 239.255.255.253.svrloc: UDP, length 36
07:47:52.223022 IP 169.254.155.120.50460 > 239.255.255.253.svrloc: UDP, length 36
07:47:52.223547 IP 169.254.155.120.50461 > 239.255.255.253.svrloc: UDP, length 36
07:47:52.223780 IP 169.254.155.120.50462 > 239.255.255.253.svrloc: UDP, length 36
MBP 1.83 Mac OS X (10.4.5)