[HN Gopher] Is IPv6 faster than IPv4?
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       Is IPv6 faster than IPv4?
        
       Author : lladnar
       Score  : 12 points
       Date   : 2022-06-14 18:54 UTC (4 hours ago)
        
 (HTM) web link (pansift.com)
 (TXT) w3m dump (pansift.com)
        
       | neilalexander wrote:
       | In many ways, IPv6 stacks are simpler than their IPv4
       | counterparts. The fixed packet headers are simpler and faster to
       | parse, ICMPv6 includes both router and neighbour solicitation (as
       | opposed to being separate protocols like ARP in IPv4), routers
       | generally won't fragment large packets in transit (instead giving
       | way to Path MTU Discovery) and NAT is not so widely needed as it
       | is in IPv4.
       | 
       | That said, the fixed packet headers being slightly longer means
       | there's actually slightly less room for the payload in an IPv6
       | packet compared to IPv4 on an otherwise equivalent link MTU.
       | 
       | I'm not entirely sure what to make of the results in the article
       | though and the title really should be leading with asking why in
       | order to be less sensational. The only explanation I can think of
       | right now is that many routers have historically deprioritised
       | ICMP traffic or even dropped it when under heavy load, but given
       | that ICMPv6 is much more core to the functioning of IPv6 in
       | general, it is perhaps not as feasible to do so for ICMPv6.
        
       | [deleted]
        
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       (page generated 2022-06-14 23:02 UTC)