在xGW(PDSN)中,即使配置了主备DNS,在PPP协商过程中,PDSN仍然有可能只分配IP,而不分配DNS。
On the xGW(PDSN), even if both the primary DNS and the secondary DNS are configured, during the PPP negotiation process, possibly the PDSN only assigns the IP address and does not assign the DNS.