NTF_STICKY
nl_flags |= NTF_STICKY;
const uint16_t supported_flags = NTF_PROXY | NTF_STICKY;
if (attrs.ndm_flags & NTF_STICKY)
if (attrs.ndm_flags & NTF_STICKY)
nl_flags |= NTF_STICKY;
uint8_t nl_flags = NTF_STICKY;