Bug ID 600119: DNS name resolution for servers outside of Network Access Name Split scope can be slow in some conditions

Last Modified: Nov 07, 2022

Bug Tracker

Affected Product:  See more info
BIG-IP APM(all modules)

Known Affected Versions:
12.0.0, 12.0.0 HF1, 12.0.0 HF2, 12.0.0 HF3, 12.0.0 HF4, 12.1.0, 12.1.0 HF1, 12.1.0 HF2, 12.1.1, 12.1.1 HF1, 12.1.1 HF2

Fixed In:
13.0.0, 12.1.2

Opened: Jun 18, 2016
Severity: 3-Major


When connected to the vpn and wifi adapter is enabled (not connected to any wlan) access to websites outside the vpn is very slow. Access is fine when wifi interface is disabled.


User experience while navigating servers outside of VPN scope is impacted by increased connection time


- number of DNS servers configured for active network adapters matches the number of DNS servers configured in Network Access resource


Disable unused adapters or change the number of configured DNS servers

Fix Information

DNS requests for names outside the VPN scope sent to VPN DNS server are redirected to DNS servers from NIC using Round Robin algorithm

Behavior Change