#3150: Ping

XKCD comic, described below.
Transcript

[Cueball is walking on a sandy beach near the shore. A bottle with a paper inside is stuck in the sand, presumably from being washed up by the tide.]

[Cueball has picked up the bottle and is reading the message inside, which he has taken out. The messages contents are displayed on the top portion of the panel. There is illegible text written beneath the message title. He is holding the cork of the bottle in his other hand]

Message Title: ICMP Echo Request

[Cueball has set the bottle down below him and is now scribbling out a new message. Once again, the contents are on the top portion of the panel, with illegible text written beneath the message title. He has put down the cork]

Message Title: ICMP Echo Reply

[Cueball is walking away from the shore now, having set the bottle back into the sea, with the message inside.]


(Sourced from explainxkcd.com)

Title text:Progress on getting shipwrecked sailors to adopt ICMPv6 has been slow.


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