dhcpcd does not write a pidfile to /run/dhcpcd.pid; this may have been
true in the past, but now it directly writes files (pid, sock, ...) to
the configured rundir. Configure with --rundir=/run/dhcpcd as Gentoo
ebuild for net-misc/dhcpcd does, and direct the initscript to
/run/dhcpcd/pid for pidfile.
---
 main/dhcpcd/APKBUILD     | 4 ++--
 main/dhcpcd/dhcpcd.initd | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/main/dhcpcd/APKBUILD b/main/dhcpcd/APKBUILD
index 269a068ca9..3a7d18d1b1 100644
--- a/main/dhcpcd/APKBUILD
+++ b/main/dhcpcd/APKBUILD
@@ -3,7 +3,7 @@
 # Maintainer: Natanael Copa <ncopa@alpinelinux.org>
 pkgname=dhcpcd
 pkgver=9.4.1
-pkgrel=0
+pkgrel=1
 pkgdesc="RFC2131 compliant DHCP client"
 url="https://roy.marples.name/projects/dhcpcd"
 arch="all"
@@ -26,7 +26,7 @@ build() {
 		--localstatedir=/var \
 		--libexecdir=/usr/lib/$pkgname \
 		--dbdir=/var/lib/$pkgname \
-		--rundir=/run \
+		--rundir=/run/dhcpcd \
 		--enable-ipv6 \
 		--without-dev \
 		--without-udev
diff --git a/main/dhcpcd/dhcpcd.initd b/main/dhcpcd/dhcpcd.initd
index aab118242e..217d03ee21 100644
--- a/main/dhcpcd/dhcpcd.initd
+++ b/main/dhcpcd/dhcpcd.initd
@@ -5,7 +5,7 @@ description="DHCP Client Daemon"
 command="/sbin/dhcpcd"
 command_args="-q ${command_args:-}"
 command_args_foreground="-B"
-pidfile="/run/dhcpcd.pid"
+pidfile="/run/dhcpcd/pid"
 
 depend() {
 	provide net
-- 
2.32.0

This fix does not correctly address the issue. As I mentioned in !27909 the name of the pidfile created differs depending on whether the machine has a single or multiple network interfaces.

I am still working on a solution to this issue combined with fixing, or disabling, privilege separation.

-- 
via https://gitlab.alpinelinux.org/alpine/aports/-/merge_requests/28452#note_198405

Wasn't aware that there was a prior attempt at fixing this, sorry

-- 
via https://gitlab.alpinelinux.org/alpine/aports/-/merge_requests/28452#note_198408

Sorry to bother you @mailinglist-bot,

but we've detected that this merge request hasn't seen any recent activity. If you need help or want to discuss your approach with developers you can ping `@ncopa`. You can also ask on IRC on `#alpine-devel` on irc.oftc.net. If no further activity occurs in this MR, Alpine developers may close it in the future.

Thanks for your contribution.

-- 
via https://gitlab.alpinelinux.org/alpine/aports/-/merge_requests/28452#note_205992

I think we can merge this in the meanwhile.

Can you please rebase it?

-- 
via https://gitlab.alpinelinux.org/alpine/aports/-/merge_requests/28452#note_243720

And please also update checksum

-- 
via https://gitlab.alpinelinux.org/alpine/aports/-/merge_requests/28452#note_243722

On Tue, 14 Dec 2021 12:29:28 +0000, opal hart wrote:
>  command_args_foreground="-B"
> -pidfile="/run/dhcpcd.pid"
> +pidfile="/run/dhcpcd/pid"

Does dhcpcd create /run/dhcpcd directory if it doesn't exist?

-- 
via https://gitlab.alpinelinux.org/alpine/aports/-/merge_requests/28452#note_243731

On Tue, 14 Dec 2021 12:29:28 +0000, opal hart wrote:
>  command_args_foreground="-B"
> -pidfile="/run/dhcpcd.pid"
> +pidfile="/run/dhcpcd/pid"

Good question. It looks like it does:
https://github.com/NetworkConfiguration/dhcpcd/blob/29f6c47b9e1eac058eee71116e6aa1038e8fef7e/src/dhcpcd.c#L2291

-- 
via https://gitlab.alpinelinux.org/alpine/aports/-/merge_requests/28452#note_243732