If they disconnect from the VPN, Internet resolution works for them. This issue for me was that Split-DNS was working, but using IPv6 for doing lookups for IPv6 hosts outside the tunnel. This document describes a troubleshooting scenario which applies to applications that do not work through the Cisco AnyConnect VPN Client. A new pane labeled Cisco AnyConnect VPN Client will pop up. Unchecking IPV6 on Anyconnect and their NIC solves this but it'd be nice to fix it for everyone. If the problem persists, read on. To my mind, there's no way to manage that with AnyConnect (even if you do not put any IPv6 pool on the VPN setup). I added IPv6 split tunneling using a bogus IPv6 IP block. We had this same issue and after a little bit of searching on the ASA you can remove these IPv6 addresses by changing the AnyConnect Client Profile. Then disable IPv6, change IPv4 IP settings from Fixed IP to Dynamic. Mar 15, 2016. From the Applications folder, click the AnyConnect VPN icon to open the user interface. Then Edit the Client Profile and on 'Preferences (Part 1)' scroll to the bottom and where there is the option 'IP Protocol Supported' change it to just IPv4. Is it tested ? 2.3(2016) Description (partial) Symptom: Unable to connect using Anyconnect client. In order to resolve this, disable the IPv6 related services on the MAC machine and try to connect with an IPv4 address. Under the Network and Internet category, select the Network and Sharing Center. Before upgrading to Windows 10 I uninstalled (add / remove programs) the old client. Yep, have this issue too and so do many others (like Cisco AnyConnect Secure Mobility Client on OS X Yosemite - VPN not working if the Mac is connected via Iphone HotSpot and Yosemite, iPhone Hotspot and Cisco AnyConnect as well as many over at the Cisco forums). IPv4—Only IPv4 connections can be made to the ASA. According to this forum post the Cisco IPSec client doesn't support IPv6, so I'd have to make the costly upgrade to AnyConnect. IPv4, IPv6—First, attempt to make an IPv4 connection to the ASA. In this video, Namit reviews Health Monitoring improvements and introduces the new Unified Health Monitoring dashboard on the FMC. Any idea on what I have wrong here? This is verified via non-stale GPO on the affected machine and Cisco Anyconnect ensures its own virtual network adapter is set to highest priority upon VPN connecting. It is just local on your client (and I guess not even known by the ASA). To do that, you have to enable protocol bypass on the group policy : group-policy your_VPN_policy attributesclient-bypass-protocol enable. https://www.cisco.com/c/en/us/td/docs/security/vpn_client/anyconnect/anyconnect49/administration/guide/b_AnyConnect_Administrator_Guide_4-9/anyconnect-profile-editor.html. John W Kerns August 4, 2017. This field configures the initial IP protocol and order of fallback. If that is not successful, AnyConnect attempts to initiate the connection using IPv6. 5 If an IPv4 VPN is established the IPv4 client does not get an IPv6 pool address. Now I don't need IPv6 traffic over the tunnel at all, but since I am specifying what should go over it, this has the side affect of telling Anyconnect what traffic should NOT go over it. Attached are the dictionary and NAD profile as described in Arista CloudVision WiFi Integration with Cisco ISE . If the client cannot connect using IPv4, then try to make an IPv6 connection. You can see here in my Windows IPCONFIG output that I have an IPv6 DNS server listed as one of my local resolvers: DNS Servers . Basic Troubleshooting on Cisco AnyConnect Secure Mobility Client Errors. I am having problems with installing the Cisco Anyconnect Client version 4.1.04011-web-deploy-k9 on Windows 10. … Right click the connection and choose properties and un-check the “Internet Protocol Version 6(TCP/IPv6)” Now right click the Cisco AnyConnect client and choose “Network Repair” and this should fix the problem. We use both the split-tunneling and split-dns features to selectively direct network and dns queries to our remote DNS servers and networks. Cisco Bug: CSCtb76577 - Anyconnect connection failure with IPv6. started 2017-01-05 22:52:18 UTC. group-policy colo-anyconnect-ras attributes wins-server none dns-server value 10.20.20.105 10.20.20.106 vpn-simultaneous-logins 3 vpn-tunnel-protocol ssl-client split-tunnel-policy tunnelspecified split-tunnel-network-list value colo-ras-split-tunnel default-domain value internaldomain.int split-dns value domain.com internaldomain.int domain2.com split-tunnel-all-dns disable address-pools value colo-ras. Workaround that I've thought up: Making a split-brain DNS that supplies AAAA records to LAN hosts, and only A records to VPN clients. First verify if any IPv6 adaptors are enabled on the MAC machine and check if MAC tries to contact ASA over the IPv6 network. Firepower 6.7 Release Demonstration - Health Monitoring, Troubleshoot Dot1x and Radius in IOS and IOS-XE. Lookups for names sent over the tunnel using split-dns work fine, but any lookups not sent over the tunnel fail. Select the Start button and then select the Control Panel. Start the VPN, authenticate with DUO, VPN connects - at this point they are "on" the network for all intents and purposes. Conditions: This problem only occurs when establishing an AnyConnect Client session running on Windows XP with IPv6 enabled. If the client cannot connect using IPv6 then try to make an IPv4 connection. Is there an option to disable IPv6 when connecting AnyConnect? . So this has the effect of allowing IPv6 traffic to selectively traverse the Anyconnect tunnel based on the access list colo-ras-split-tunnel. I have a anyconnect remote vpn profile where I am having the problem with intermittent issue with external dns. freeradius-users@lists.freeradius.org. A couple times now I'm seeing the clients local connection using IPV6 for DNS. Hope this helps someone else with the same issue. With IPv6 enabled on their end, split-dns feature stops working. This works fine for most of our users. As a work around I have them disable IPv6 on their network adapter, and then the split-dns feature works perfectly. Is there some sort of config in the splitdns feature to not do anything with IPv6 name lookups over the tunnel? This behavior only effects Windows XP IPv6 Anyconnect … Hi, I work for an IT company that has most of our employees currently working from home. 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