sys-apps/iproute2: Sync with Gentoo

It's from Gentoo commit 2c49e8a4568dace61bfc520a4dcab205553584d7.

Signed-off-by: Flatcar Buildbot <buildbot@flatcar-linux.org>

sdk_container/src/third_party/portage-stable/sys-apps/iproute2/files/iproute2-6.17.0-musl.patch

@@ -0,0 +1,32 @@
+From 7119f3736f689ab396ca4193ac593938affd55fa Mon Sep 17 00:00:00 2001
+From: Yureka <yureka@cyberchaos.dev>
+Date: Sun, 12 Oct 2025 14:39:47 +0200
+Subject: lib: bridge: avoid redefinition of in6_addr
+
+On musl libc, which does not use the kernel definitions of in6_addr, including
+the libc headers after the kernel (UAPI) headers would cause a redefinition
+error. The opposite order avoids the redefinition.
+
+Fixes: 9e89d5b94d749f37525cd8778311e1c9f28f172a
+Signed-off-by: Yureka <yureka@cyberchaos.dev>
+---
+ lib/bridge.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/lib/bridge.c b/lib/bridge.c
+index 5386aa017..104f5858b 100644
+--- a/lib/bridge.c
++++ b/lib/bridge.c
+@@ -2,8 +2,8 @@
+ 
+ #include <net/if.h>
+ 
+-#include "bridge.h"
+ #include "utils.h"
++#include "bridge.h"
+ 
+ void bridge_print_vlan_flags(__u16 flags)
+ {
+-- 
+cgit 1.2.3-korg
+

sdk_container/src/third_party/portage-stable/sys-apps/iproute2/iproute2-6.17.0.ebuild

@@ -10,7 +10,7 @@ if [[ ${PV} == 9999 ]] ; then
 	inherit git-r3
 else
 	SRC_URI="https://www.kernel.org/pub/linux/utils/net/${PN}/${P}.tar.xz"
-	KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~loong ~m68k ~mips ~ppc ~ppc64 ~riscv ~s390 ~sparc ~x86"
+	KEYWORDS="~alpha amd64 ~arm arm64 ~hppa ~loong ~m68k ~mips ppc ppc64 ~riscv ~s390 ~sparc x86"
 fi
 
 DESCRIPTION="kernel routing and traffic control utilities"
@@ -47,6 +47,7 @@ BDEPEND="
 "
 
 PATCHES=(
+	"${FILESDIR}"/${PN}-6.17.0-musl.patch # bug #963708
 	"${FILESDIR}"/${PN}-6.10.0-musl-2.patch # bug #926341
 	"${FILESDIR}"/${PN}-6.9.0-mtu.patch # bug #291907
 	"${FILESDIR}"/${PN}-6.8.0-configure-nomagic-nolibbsd.patch # bug #643722 & #911727