I ran a diff on two initrds - one that works (good) and one that doesn't (bad). Files the differ: initrd.bad/etc/cmdline.d/95nfs.conf initrd.bad/etc/group (differences seem unrelated). initrd.bad/etc/hostname initrd.bad/lib/dracut/hostonly-files (differences seem unrelated). # cat bad/etc/cmdline.d/95nfs.conf root=nfs4:rainbow:/srv/nfsroot/discompi1/root:rw,relatime,vers=4.1,rsize=131072,wsize=131072,namlen=255,hard,proto=tcp,port=0,timeo=600,retrans=2,sec=sys,clientaddr=192.168.6.101,local_lock=none,addr=192.168.2.128 ifname=eth0:00:30:48:96:eb:8e ip=eth0:static # cat good/etc/cmdline.d/95nfs.conf root=nfs4:192.168.2.128:/srv/nfsroot/discompi1/root:rw,relatime,vers=4.1,rsize=131072,wsize=131072,namlen=255,hard,proto=tcp,port=0,timeo=600,retrans=2,sec=sys,clientaddr=192.168.6.101,local_lock=none,addr=192.168.2.128 ifname=eth0:00:30:48:96:eb:8e ip=eth0:static