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Use a smaller MTU, which should not impact throughput since 2800+overhead/2 still fits in two of these.

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Adam Ierymenko 2019-03-08 13:15:47 -08:00
parent 270debb3fc
commit 6fbf21b4f0
1 changed files with 4 additions and 3 deletions
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7
include/ZeroTierOne.h
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@ -102,10 +102,11 @@ extern "C" {
/** /**
* Default UDP payload size (physical path MTU) not including UDP and IP overhead * Default UDP payload size (physical path MTU) not including UDP and IP overhead
* *
* This is 1500 - IPv6 UDP overhead - PPPoE overhead and is safe for 99.9% of * This is small enough for PPPoE and for Google Cloud's bizarrely tiny MTUs.
* all Internet links. * A 2800 byte payload still fits into two packets, so this should not impact
* real world throughput at all vs the previous default of 1444.
*/ */
#define ZT_DEFAULT_PHYSMTU 1444 #define ZT_DEFAULT_PHYSMTU 1432
/** /**
* Maximum physical UDP payload * Maximum physical UDP payload