arp who-has? tell?

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Hello,

My desktop computer, running fedora 8, software firewall on, selinux
on, dynamic dns, my ip adress is 98.203.6.135,
[email protected] is connected directly to
Comcast via a cable modem. I recently changed modems due to an
electrical storm. I noticed the new modems pc activity light blinks
continuously. This did not happen with the old modem. I read an
article about tcp dump and tried # /usr/sbin/tcpdump -nS > tcpdump.log
Here is part of tcpdump.log:

08:15:47.984724 arp who-has 71.206.79.141 tell 71.206.76.1
08:15:47.985081 arp who-has 98.203.1.140 tell 98.203.0.1
08:15:48.160197 arp who-has 76.110.184.13 tell 76.110.184.1
08:15:48.208245 arp who-has 66.229.170.141 tell 66.229.170.1
08:15:48.280100 arp who-has 98.203.0.91 tell 98.203.0.1
08:15:48.280552 arp who-has 98.203.0.92 tell 98.203.0.1
08:15:48.280868 arp who-has 98.203.0.93 tell 98.203.0.1
08:15:48.281164 arp who-has 98.203.0.94 tell 98.203.0.1
08:15:48.281591 arp who-has 98.203.0.95 tell 98.203.0.1
08:15:48.281998 arp who-has 98.203.0.96 tell 98.203.0.1
08:15:48.282696 arp who-has 98.203.0.97 tell 98.203.0.1
08:15:48.283852 arp who-has 98.203.0.99 tell 98.203.0.1
08:15:48.284338 arp who-has 98.203.0.100 tell 98.203.0.1
08:15:48.285053 arp who-has 98.203.0.101 tell 98.203.0.1
08:15:48.285399 arp who-has 98.203.2.181 tell 98.203.0.1
08:15:48.285699 arp who-has 98.203.0.102 tell 98.203.0.1
08:15:48.286154 arp who-has 98.203.0.103 tell 98.203.0.1
08:15:48.287382 arp who-has 98.203.0.105 tell 98.203.0.1
08:15:48.287780 arp who-has 98.203.0.106 tell 98.203.0.1
08:15:48.289626 arp who-has 98.203.0.109 tell 98.203.0.1
08:15:48.292039 arp who-has 65.34.210.47 tell 65.34.210.1
08:15:48.492036 arp who-has 76.110.191.29 tell 76.110.184.1
08:15:48.513075 arp who-has 66.229.170.86 tell 66.229.170.1
08:15:48.513366 IP 98.203.6.135.33433 > 68.87.74.162.domain: 63866+
PTR? 86.170.229.66.in-addr.arpa. (44)
08:15:48.552057 arp who-has 98.203.1.178 tell 98.203.0.1
08:15:48.567617 IP 68.87.74.162.domain > 98.203.6.135.33433: 63866 1/0/0 (93)
08:15:48.676102 arp who-has 66.229.170.31 tell 66.229.170.1
08:15:48.733381 arp who-has 98.203.3.181 tell 98.203.0.1
08:15:48.774378 arp who-has 76.110.185.155 tell 76.110.184.1
08:15:49.080792 arp who-has 71.206.77.81 tell 71.206.76.1
08:15:49.118336 arp who-has 98.46.109.240 tell 98.46.109.1
08:15:49.118731 IP 98.203.6.135.33433 > 68.87.74.162.domain: 184+ PTR?
240.109.46.98.in-addr.arpa. (44)
08:15:49.134683 IP 68.87.74.162.domain > 98.203.6.135.33433: 184
NXDomain 0/1/0 (132)
08:15:49.160092 arp who-has 76.110.187.17 tell 76.110.184.1
08:15:49.208825 arp who-has 76.110.189.58 tell 76.110.184.1
08:15:49.317184 arp who-has 65.34.210.47 tell 65.34.210.1
08:15:49.413014 arp who-has 98.203.2.162 tell 98.203.0.1
08:15:49.589418 arp who-has 76.110.184.13 tell 76.110.184.1
08:15:49.592161 arp who-has 98.203.5.98 tell 98.203.0.1
08:15:49.635103 arp who-has 76.110.185.232 tell 76.110.184.1
08:15:49.752062 arp who-has 65.34.211.67 tell 65.34.210.1
08:15:49.872395 arp who-has 98.203.3.153 tell 98.203.0.1
08:15:50.091724 arp who-has 98.203.0.111 tell 98.203.0.1
08:15:50.093236 arp who-has 98.203.0.114 tell 98.203.0.1
08:15:50.094008 arp who-has 98.203.0.115 tell 98.203.0.1
08:15:50.095170 arp who-has 98.203.0.117 tell 98.203.0.1
08:15:50.098236 arp who-has 98.203.0.118 tell 98.203.0.1
08:15:50.098577 arp who-has 98.203.0.120 tell 98.203.0.1
08:15:50.098876 arp who-has 98.203.0.121 tell 98.203.0.1
08:15:50.099178 arp who-has 98.203.0.122 tell 98.203.0.1
08:15:50.099480 arp who-has 98.203.0.123 tell 98.203.0.1
08:15:50.101209 arp who-has 98.203.0.125 tell 98.203.0.1
08:15:50.101561 arp who-has 98.203.0.126 tell 98.203.0.1
08:15:50.174306 arp who-has 76.110.186.255 tell 76.110.184.1
08:15:50.174588 IP 98.203.6.135.33433 > 68.87.74.162.domain: 32460+
PTR? 255.186.110.76.in-addr.arpa. (45)
08:15:50.190267 arp who-has 76.110.184.13 tell 76.110.184.1
08:15:50.206890 arp who-has 98.203.0.39 tell 98.203.0.1
08:15:50.220917 arp who-has 71.206.78.27 tell 71.206.76.1
08:15:50.224216 arp who-has 66.229.170.254 tell 66.229.170.1
08:15:50.228505 IP 68.87.74.162.domain > 98.203.6.135.33433: 32460 1/0/0 (95)
08:15:50.228984 IP 98.203.6.135.33433 > 68.87.74.162.domain: 22637+
PTR? 254.170.229.66.in-addr.arpa. (45)
08:15:50.281247 IP 68.87.74.162.domain > 98.203.6.135.33433: 22637 1/0/0 (95)
08:15:50.282044 arp who-has 76.110.189.110 tell 76.110.184.1
08:15:50.364382 arp who-has 98.46.109.90 tell 98.46.109.1
08:15:50.392168 arp who-has 76.110.189.56 tell 76.110.184.1
08:15:50.531449 arp who-has 98.203.7.246 tell 98.203.0.1
08:15:50.538798 arp who-has 98.35.105.247 tell 98.35.105.1
08:15:50.539099 IP 98.203.6.135.33433 > 68.87.74.162.domain: 62320+
PTR? 247.105.35.98.in-addr.arpa. (44)
08:15:50.539324 IP 98.203.6.135.traceroute > 68.87.74.162.domain:
3108+ PTR? 247.105.35.98.in-addr.arpa. (44)
08:15:50.568403 arp who-has 71.206.79.143 tell 71.206.76.1
08:15:50.591548 arp who-has 66.229.170.84 tell 66.229.170.1
08:15:50.593753 IP 68.87.74.162.domain > 98.203.6.135.33433: 62320
NXDomain 0/1/0 (132)

Is this normal? What does all this mean?

-macroron-


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