Auto merge of #233 - martinschleiss:master, r=mrmonday
Auto merge of #233 - martinschleiss:master, r=mrmonday

Add Icmp transport channel iterator

Hi,

I had the need for an ICMP packet iterator. I added it to the existing ones since I can not use
transport_channel_iterator! because of some dependencies on private modules like pnet::sockets or pnet::internal .

Best,
Martin

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