Appendix A Constants

A.1 Paths #

PathUse
Machine\System\Networkconfiguration root, readiness, DUID (§2.3, §8)
/run/netd/control.sockcontrol socket (§9.1)
/run/netdruntime directory, created by peinit (§2.1)
/var/state/netd/duidthe DUID, when the registry has none (§5.7)
/var/state/netd/secretthe RFC 7217 secret (§6.2)
/usr/sbin/netdthe daemon
/proc/sys/net/ipv6/conf/<name>/accept_raset to 0 (§6.1)

A.2 Numbers #

ConstantValue§
Routing protocol stamped on netd's routes200§4.3
Default route metric100; 600 for wireless§4.2
Minimum MTU applied68§4.3
Converge repetitions per passat most 4§2.2
Registry tree depth read16§2.3
Control message ceiling65536 bytes§9.2
Control read and write timeout2 s§9.1
DHCPv4 first backoff, ceiling4 s, 64 s, ±1 s jitter§5.2
DISCOVER retransmissions before "nobody answered"3§5.2
REQUESTs in Requesting before rediscovery4§5.2
REQUESTs in Rebooting before rediscovery2§5.2
Renewing and rebinding retransmission floor60 s§5.2
Shortest lease accepted4 s§5.3
DHCPv4 maximum message size advertised1500§5.1
DHCPv4 message paddingto 300 bytes§5.1
Domain-search compression jumps per name16§5.3
Link-local range169.254.1.0–169.254.254.255§5.5
Router solicitation interval, ceiling4 s, 3600 s, ±10% jitter§6.1
Solicitations before backoff3§6.1
Prefixes, RDNSS servers, DNSSL domains per advertisement option16§6.1
SLAAC prefix length64§6.2
Two-hour rule7200 s§6.2
Temporary address preferred lifetime86400 s minus 0–599 s§6.2
Temporary address valid lifetime172800 s§6.2
Temporary addresses per prefix4§6.2
Stable address counter attempts8§6.2
DHCPv6 first retransmission, ceiling1 s, 3600 s, ±10% jitter§6.3
DHCPv6 refresh default, floor86400 s, 600 s§6.3
DHCPv6 servers and domains kept16 each§6.3

A.3 Identifiers #

IdentifierValue§
Interface id digest prefixpeios-netd-ifid|§4.1
Network id digest prefixpeios-netd-network|§7.1
Stable address digest prefixpeios-ndp-stable-iid|§6.2
DUID-LL header00 03 00 01§5.7
Status descriptorO:SYG:SYD:P(A;;KA;;;SY)(A;;KR;;;WD)§8.1
NETWORK_QUERY, NETWORK_CONTROL, NETWORK_ALL_ACCESS0x1, 0x2, 0x000F0003§9.1

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