Bug#1107745: iproute2: parser refuses to parse ip link set $DEVICE macaddr del $MACADDR, manual says that's right

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From	наб <nabijaczleweli@nabijaczleweli.xyz>
Newsgroups	linux.debian.bugs.dist, linux.debian.kernel
Subject	Bug#1107745: iproute2: parser refuses to parse ip link set $DEVICE macaddr del $MACADDR, manual says that's right
Date	Fri, 13 Jun 2025 18:40:01 +0200
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Package: iproute2
Version: 6.1.0-3
Version: 6.13.0-1
Severity: normal

Dear Maintainer,

ip-link(8) says
       ip link { set | change } { DEVICE | group GROUP }
               [ { up | down } ]
			   ...
               [ addrgenmode { eui64 | none | stable_secret | random } ]
               [ macaddr [ MACADDR ]
                         [ { flush | add | del } MACADDR ]
                         [ set MACADDR ] ]
so naturally
  ip l set tap-vbox macaddr del 76:6a:c6:49:f3:30
should work, right?

Alas it doesn't and it fails with
  Error: either "dev" is duplicate, or "macaddr" is a garbage.
which is additionally weird since there's no "dev" in there.

Best,

-- System Information:
Debian Release: 12.11
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable-security'), (500, 'stable-debug'), (500, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 6.1.0-27-amd64 (SMP w/24 CPU threads; PREEMPT)
Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_FIRMWARE_WORKAROUND, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8), LANGUAGE=en_GB:en
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages iproute2 depends on:
ii  debconf [debconf-2.0]  1.5.82
ii  libbpf1                1:1.1.0-1
ii  libbsd0                0.11.7-2
ii  libc6                  2.36-9+deb12u10
ii  libcap2                1:2.66-4+deb12u1
ii  libcap2-bin            1:2.66-4+deb12u1
ii  libdb5.3               5.3.28+dfsg2-1
ii  libelf1                0.188-2.1
ii  libmnl0                1.0.4-3
ii  libselinux1            3.4-1+b6
ii  libtirpc3              1.3.3+ds-1
ii  libxtables12           1.8.9-2

Versions of packages iproute2 recommends:
pn  libatm1  <none>

Versions of packages iproute2 suggests:
pn  iproute2-doc  <none>
ii  python3       3.11.2-1+b1

-- Configuration Files:
/etc/iproute2/rt_tables changed:
255     local      1
254     main       2
253     default    3
0       unspec     4


-- debconf information:
  iproute2/setcaps: false

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Bug#1107745: iproute2: parser refuses to parse ip link set $DEVICE macaddr del $MACADDR, manual says that's right наб <nabijaczleweli@nabijaczleweli.xyz> - 2025-06-13 18:40 +0200

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