Support client arch and interface identifier options

Understand symbolic names for remaining boot option. Interface
identifier expects 3 byte hex encoding in 01:03:01 format.

Related: rhbz#2002871

dnsmasq-2.86-dhcpv6-client-arch.patch

@@ -0,0 +1,28 @@
+From 4272580bb586180e596e5ed30b68455826acc8c1 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Petr=20Men=C5=A1=C3=ADk?= <pemensik@redhat.com>
+Date: Wed, 22 Sep 2021 14:54:01 +0200
+Subject: [PATCH] Add support for option6 names of RFC 5970
+
+Client Network Interface Identifier and Client System Architecture Type
+options were not understood by dnsmasq. Add it to supported option
+types.
+---
+ src/dhcp-common.c | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/src/dhcp-common.c b/src/dhcp-common.c
+index 36bc38a..528e8e7 100644
+--- a/src/dhcp-common.c
++++ b/src/dhcp-common.c
+@@ -659,6 +659,8 @@ static const struct opttab_t opttab6[] = {
+   { "ntp-server", 56, 0 /* OT_ADDR_LIST | OT_RFC1035_NAME */ },
+   { "bootfile-url", 59, OT_NAME },
+   { "bootfile-param", 60, OT_CSTRING },
++  { "client-arch", 61, 2 | OT_DEC }, /* RFC 5970 */
++  { "client-interface-id", 62, 1 | OT_DEC }, /* RFC 5970 */
+   { NULL, 0, 0 }
+ };
+ #endif
+-- 
+2.31.1
+

dnsmasq.spec

@@ -46,6 +46,7 @@ Patch3:         dnsmasq-2.78-fips.patch
 Patch4:        dnsmasq-2.79-server-domain-rh1919894.patch
 # https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2021q3/015640.html
 Patch5:         dnsmasq-2.86-alternative-lease.patch
+Patch6:         dnsmasq-2.86-dhcpv6-client-arch.patch
 
 # This is workaround to nettle bug #1549190
 # https://bugzilla.redhat.com/show_bug.cgi?id=1549190