Network Time Protocol (ntp)

draft-ietf-ntp-yang-data-model-02.txt:
xym 0.4:
Extracting 'ietf-ntp@2018-03-05.yang'
   Removed 2 empty lines


ietf-ntp@2018-03-05.yang:
pyang 1.7.5: pyang --verbose --ietf -p {libs} {model}:
ietf-ntp@2018-03-05.yang:489: error: ietf-access-control-list:access-lists in the path for acl at ietf-ntp@2018-03-05.yang:487 is not found

yanglint 0.14.80: yanglint --verbose -p {rfclib} -p {draftlib} -p {tmplib} {model} -i:
err : No resolvents found for leafref "/ietf-access-control-list:access-lists/ietf-access-control-list:acl/ietf-access-control-list:name". (/ietf-ntp:ntp/access-rules/access-rule/acl)
err : Module "ietf-ntp" parsing failed.