remove prototypes with no matching function and externs with no var
partly checked by millert@

Send source link-layer address option in router advertisements.

With this, hosts immediately learn the layer 2 (i.e. ethernet mac)
address of their default router and don't need to do another round

Send source link-layer address option in router advertisements.

With this, hosts immediately learn the layer 2 (i.e. ethernet mac)
address of their default router and don't need to do another round
trip.

It also turns out that apple devices (macOS & iOS) install the default
route as what they call "interface scoped" if a DNS option is present
and the source link-layer address option is absent. This effectively
makes the default route unusable.

Problem with fruit devices tracked down & diff by Ryan Vogt (rvogt.ca
AT gmail), thanks!

OK sthen, bket

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remove duplicate includes

Implement RFC 8781 PREF64 router advertisement option.

With this clients can learn the presence and used prefix for Network
Address and Protocol Translation between IPv6 and IPv4 (NAT64).

Apparentl

Implement RFC 8781 PREF64 router advertisement option.

With this clients can learn the presence and used prefix for Network
Address and Protocol Translation between IPv6 and IPv4 (NAT64).

Apparently there is support in mobile devices as well as in macOS.

This option, together with the the dhcp "IPv6-only preferred"
option (108) enables the Customer-side transLATor (CLAT) on macOS so
IPv4 literals can be used in IPv6-only networks.

Input & OK kn

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Path #defines are traditionally prefixed with _PATH.
Pointed out by deraadt

Make imsg event structs static to fix -fno-common.
Follows claudio's lead in ospfd et al.
Problem reported by mortimer.

No need for a global rad_process; unbreaks -fno-common.
Problem reported by mortimer

Let rad(8) handle all rdomains in a single daemon, similar to previous
work in slaacd.
Suggested / requested by tb who showed me previous work by reyk which
unfortunately predated my work in slaacd a

Let rad(8) handle all rdomains in a single daemon, similar to previous
work in slaacd.
Suggested / requested by tb who showed me previous work by reyk which
unfortunately predated my work in slaacd and followed a different
pattern to that done in slaacd.
Testing & OK tb

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Replace SIMPLEQ concatenation loops with SIMPLEQ_CONCAT

As a result *ra_rdnss and *ra_dnssl are not used any more, and can be removed.
While here remove spurious space.

OK florian@, millert@

Use defines instead of raw numbers for intervals specified by RFC
4861. No binary change.
While here consistently use #define<tab> instead of #define<space>.

When system calls indicate an error they return -1, not some arbitrary
value < 0. errno is only updated in this case. Change all (most?)
callers of syscalls to follow this better, and let's see if

When system calls indicate an error they return -1, not some arbitrary
value < 0. errno is only updated in this case. Change all (most?)
callers of syscalls to follow this better, and let's see if this strictness
helps us in the future.

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Avoid calling dup2(oldd, newd) when oldd == newd. In that case the
descriptor keeps CLOEXEC flag then it will be closed unexpectedly by
exec().

ok tedu florian

In the manner of recent changes to unwind(8) and slaacd(8), make imsg
processing more paranoid. Call fatalx() for imsg size mismatches or
unexpected/missing imsg fd.
OK florian@

We don't need IMSG_SHUTDOWN, we can just close the sockets.
pointed out by deraadt

PF_ROUTE -> AF_ROUTE in the scattered sock()/setsockopt() calls
where the "wrong" #define was used.

ok dlg@

With prefixlen 128, mask_prefix() in rad(8) caused a stack overflow
in the config parser. Add an out of bounds check for the in6_addr.
OK florian@

Since -s argument is no longer checked, during reexec, the argv size then must
be shortened by 1.

OK florian@

Leave the control socket behind on shutdown. It doesn't hurt anyone.
On the other hand it is much more powerful to get rid of cpath; rad is
no longer allowed to change anything on the filesystem.
Tri

Leave the control socket behind on shutdown. It doesn't hurt anyone.
On the other hand it is much more powerful to get rid of cpath; rad is
no longer allowed to change anything on the filesystem.
Triggered by mestre@'s work to fix unlinking in other daemons and a
question from deraadt@
OK mestre

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Move dns settings to global options so that they don't need to be
repeated in every interface block - they can still be overwritten
on a per interface basis.
Pointed out by, tweaks & OK sthen

No need to copy rdns_lifetime around with an IMSG, it gets send to the
engine end frontend as part of ra_iface_conf.

Spotted after explaining to bket@ that a similar pattern is not needed
for the mt

No need to copy rdns_lifetime around with an IMSG, it gets send to the
engine end frontend as part of ra_iface_conf.

Spotted after explaining to bket@ that a similar pattern is not needed
for the mtu option.

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Fix mem leaks on config reload:
- always free struct ra_iface_conf with free_ra_iface_conf()
- free_ra_iface_conf() needs to free the recently added
nameserver and search list

Introduce MTU option.

The MTU option is used in Router Advertisement messages to ensure that
all nodes on a link use the same MTU value in those cases where the link
MTU is not well known.

Feedback

Introduce MTU option.

The MTU option is used in Router Advertisement messages to ensure that
all nodes on a link use the same MTU value in those cases where the link
MTU is not well known.

Feedback (thank you!) and OK from florian@

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Stop our own router advertisements from looping back to us.
Pointed out by semarie@

Implement RFC 8106: IPv6 Router Advertisement Options for DNS
Configuration.

add missing IMSG_STARTUP; unclear why this ever worked