3 files changed, 3 insertions, 3 deletions

diff --git a/meta-networking/recipes-netkit/netkit-rusers/netkit-rusers_0.17.bb b/meta-networking/recipes-netkit/netkit-rusers/netkit-rusers_0.17.bb
index c39faef8d8..eee96d865f 100644
--- a/meta-networking/recipes-netkit/netkit-rusers/netkit-rusers_0.17.bb
+++ b/meta-networking/recipes-netkit/netkit-rusers/netkit-rusers_0.17.bb
@@ -69,4 +69,4 @@ RDEPENDS_${PN}-server += "tcp-wrappers xinetd rpcbind"
 
 # http://errors.yoctoproject.org/Errors/Details/186962/
 COMPATIBLE_HOST_libc-musl = 'null'
-PNBLACKLIST[netkit-rusers] = "Fails to build rup.c:51:10: fatal error: rstat.h: No such file or directory"
+PNBLACKLIST[netkit-rusers] ?= "Fails to build rup.c:51:10: fatal error: rstat.h: No such file or directory"
diff --git a/meta-networking/recipes-support/drbd/drbd_9.0.19-1.bb b/meta-networking/recipes-support/drbd/drbd_9.0.19-1.bb
index 23fe2021be..c296c3bc1c 100644
--- a/meta-networking/recipes-support/drbd/drbd_9.0.19-1.bb
+++ b/meta-networking/recipes-support/drbd/drbd_9.0.19-1.bb
@@ -22,4 +22,4 @@ do_install () {
     oe_runmake install DESTDIR="${D}"
 }
 
-PNBLACKLIST[drbd] = "Kernel module Needs forward porting to kernel 5.2+"
+PNBLACKLIST[drbd] ?= "Kernel module Needs forward porting to kernel 5.2+"
diff --git a/meta-networking/recipes-support/lowpan-tools/lowpan-tools_git.bb b/meta-networking/recipes-support/lowpan-tools/lowpan-tools_git.bb
index 5917cfb3e1..4a1bbe6206 100644
--- a/meta-networking/recipes-support/lowpan-tools/lowpan-tools_git.bb
+++ b/meta-networking/recipes-support/lowpan-tools/lowpan-tools_git.bb
@@ -36,4 +36,4 @@ FILES_${PN}-dbg += "${libexecdir}/lowpan-tools/.debug/"
 PACKAGES =+ "${PN}-python"
 FILES_${PN}-python = "${libdir}/python*"
 
-PNBLACKLIST[lowpan-tools] = "WARNING these tools are deprecated! Use wpan-tools instead"
+PNBLACKLIST[lowpan-tools] ?= "WARNING these tools are deprecated! Use wpan-tools instead"