libisc functions in NTP

isc_assertion_setcallback():
isc_assertion_typetotext():

isc_error_setfatal():
isc_error_setunexpected():

isc_interfaceiter_create():
isc_interfaceiter_current():
isc_interfaceiter_destroy():
isc_interfaceiter_first():
isc_interfaceiter_next():

isc_net_probeipv4():
isc_net_probeipv6():
isc_net_probe_ipv6only():

isc_netaddr_eqprefix():
isc_netaddr_fromsockaddr():

isc_win32os_versioncheck():

closelog():
openlog():
syslog():