VAS & Apache 2.2 - "A token was invalid" on one host but not another

I've configured mod_auth_vas on one server (serverone) within our network which works great. It has been awhile since I've configured it but have recently configured the module on another server (servertwo), the setup seemed to go smoothly without any errors but when accessing a protected location I am receiving the error "A token was invalid" when negotiating

With the current Apache configuration, it falls back to basic authentication which properly authenticates the user using VAS.

Would anyone be able to point me in a direction that I am overlooking?

[18:00:00] [dbg] src/mod_auth_kerb.c(1496): [ IP ]                kerb_authenticate_user entered with user (NULL) and auth_type VAS
[18:00:00] [dbg]      mod_auth_vas.c(2559): [ IP ] [mod_auth_vas] auth_vas_check_user_id: auth_type=VAS
[18:00:00] [dbg]      mod_auth_vas.c(2589): [ IP ] [mod_auth_vas] sending initial negotiate headers
[18:00:01] [dbg] src/mod_auth_kerb.c(1496): [ IP ]                kerb_authenticate_user entered with user (NULL) and auth_type VAS
[18:00:01] [dbg]      mod_auth_vas.c(2559): [ IP ] [mod_auth_vas] auth_vas_check_user_id: auth_type=VAS
[18:00:01] [dbg]      mod_auth_vas.c(2606): [ IP ] [mod_auth_vas] Got: 'Authorization: Negotiate [...]'
[18:00:01] [dbg]      mod_auth_vas.c(1556): [ IP ] [mod_auth_vas] do_gss_spnego_accept: line='YIGeBgYrBgEFBQKggZMwgZCgGjAYBgor...'
[18:00:01] [dbg]      mod_auth_vas.c(1568): [ IP ] [mod_auth_vas] do_gss_spnego_accept: server keytab: /etc/opt/quest/vas/HTTP.keytab
[18:00:01] [dbg]      mod_auth_vas.c(1569): [ IP ] [mod_auth_vas] do_gss_spnego_accept: server principal: HTTP/servertwo.host
[18:00:01] [dbg]      mod_auth_vas.c(1515): [ IP ] [mod_auth_vas] rnote_get: creating rnote
[18:00:01] [dbg]      mod_auth_vas.c(1598): [ IP ] [mod_auth_vas] calling vas_gss_spnego_accept, base64 token_size=216
[18:00:01] [dbg]      mod_auth_vas.c(1694): [ IP ] [mod_auth_vas] waiting for more tokens from client
[18:00:01] [err]                            [ IP ]                access to /index.php failed, reason: verification of user id '<null>' not configured
[18:00:01] [dbg]      mod_auth_vas.c(1437): [ IP ] [mod_auth_vas] auth_vas_cleanup_request
[18:00:01] [dbg] src/mod_auth_kerb.c(1496): [ IP ]                kerb_authenticate_user entered with user (NULL) and auth_type VAS
[18:00:01] [dbg]      mod_auth_vas.c(2559): [ IP ] [mod_auth_vas] auth_vas_check_user_id: auth_type=VAS
[18:00:01] [dbg]      mod_auth_vas.c(2606): [ IP ] [mod_auth_vas] Got: 'Authorization: Negotiate [...]'
[18:00:01] [dbg]      mod_auth_vas.c(1556): [ IP ] [mod_auth_vas] do_gss_spnego_accept: line='oTMwMaADCgEBoioEKE5UTE1TU1AAAQAA...'
[18:00:01] [dbg]      mod_auth_vas.c(1568): [ IP ] [mod_auth_vas] do_gss_spnego_accept: server keytab: /etc/opt/quest/vas/HTTP.keytab
[18:00:01] [dbg]      mod_auth_vas.c(1569): [ IP ] [mod_auth_vas] do_gss_spnego_accept: server principal: HTTP/servertwo.host
[18:00:01] [dbg]      mod_auth_vas.c(1515): [ IP ] [mod_auth_vas] rnote_get: creating rnote
[18:00:01] [dbg]      mod_auth_vas.c(1598): [ IP ] [mod_auth_vas] calling vas_gss_spnego_accept, base64 token_size=72
[18:00:01] [err]                            [ IP ] [mod_auth_vas] do_gss_spnego_accept: VAS_ERR_INTERNAL: Internal error
   First call to gss_accept_sec_context() failed, minor_status = 0, result = 589824, display_status = "A token was invalid", Mechanism-Specific error text: "unknown mech-code 0 for mech unknown"
[18:00:01] [err]                            [ IP ] [mod_auth_vas] do_gss_spnego_accept: No error message available
[18:00:01] [err]                            [ IP ]                access to /index.php failed, reason: verification of user id '<null>' not configured
[18:00:01] [dbg]      mod_auth_vas.c(1437): [ IP ] [mod_auth_vas] auth_vas_cleanup_request

Without changing any settings on the client accessing the original server, authentication passes

[18:56:46] [info] [ IP ] Connection to child 32 established (server serverone:443)
[18:56:46] [debug] ssl_engine_kernel.c(1212): [ IP ] handing out temporary 1024 bit DH key
[18:56:46] [info] Connection: Client IP: 10.1.192.79, Protocol: TLSv1, Cipher: DHE-RSA-AES256-SHA (256/256 bits)
[18:56:46] [debug] mod_auth_vas.c(2312): [ IP ] [mod_auth_vas] auth_vas_check_user_id: auth_type=VAS
[18:56:46] [debug] mod_auth_vas.c(2342): [ IP ] [mod_auth_vas] sending initial negotiate headers
[18:56:47] [debug] mod_auth_vas.c(2312): [ IP ] [mod_auth_vas] auth_vas_check_user_id: auth_type=VAS
[18:56:47] [debug] mod_auth_vas.c(2359): [ IP ] [mod_auth_vas] Got: 'Authorization: Negotiate [...]'
[18:56:47] [debug] mod_auth_vas.c(1457): [ IP ] [mod_auth_vas] do_gss_spnego_accept: line='YIIP5wYGKwYBBQUCoIIP2zCCD9egMDAu...'
[18:56:47] [debug] mod_auth_vas.c(1469): [ IP ] [mod_auth_vas] do_gss_spnego_accept: server keytab: /etc/opt/quest/vas/HTTP.keytab
[18:56:47] [debug] mod_auth_vas.c(1470): [ IP ] [mod_auth_vas] do_gss_spnego_accept: server principal: HTTP/serverone.host
[18:56:47] [debug] mod_auth_vas.c(1416): [ IP ] [mod_auth_vas] rnote_get: creating rnote
[18:56:47] [debug] mod_auth_vas.c(1498): [ IP ] [mod_auth_vas] calling vas_gss_spnego_accept, base64 token_size=5436
[18:56:47] [debug] mod_auth_vas.c(1513): [ IP ] [mod_auth_vas] do_gss_spnego_accept: server keytab /etc/opt/quest/vas/HTTP.keytab
[18:56:47] [debug] mod_auth_vas.c(1367): [ IP ] [mod_auth_vas] initialize_user
[18:56:47] [debug] mod_auth_vas.c(1395): [ IP ] [mod_auth_vas] initialize_user: Remote user principal name is flast@REALM
[18:56:47] [debug] mod_auth_vas.c(2922): [ IP ] [mod_auth_vas] set_remote_user: setting REMOTE_USER for flast@REALM
[18:56:47] [debug] mod_auth_vas.c(2936): [ IP ] [mod_auth_vas] set_remote_user: setting REMOTE_USER variable using ldap-attr userPrincipalName name mapping
[18:56:47] [debug] mod_auth_vas.c(492): [ IP ] [mod_auth_vas] set_user_obj
[18:56:47] [debug] mod_auth_vas.c(2655): [ IP ] [mod_auth_vas] set_remote_user_attr: Using VAS cache for lookup of userPrincipalName attribute
[18:56:47] [info] [ IP ] [mod_auth_vas] Remote user set from flast@REALM to first.last@domain (attribute userPrincipalName)
[18:56:47] [debug] mod_auth_vas.c(2944): [ IP ] [mod_auth_vas] set_remote_user: Mapped user to first.last@domain using ldap-attr userPrincipalName name mapping
[18:56:47] [debug] mod_auth_vas.c(1587): [ IP ] [mod_auth_vas] authenticated user: 'first.last@domain'
[18:56:47] [debug] mod_auth_vas.c(1045): [ IP ] [mod_auth_vas] auth_vas_auth_checker: user=first.last@domain authtype=VAS
[18:56:47] [debug] mod_auth_vas.c(2966): [ IP ] [mod_auth_vas] auth_vas_fixup
[18:56:47] [debug] mod_auth_vas.c(1339): [ IP ] [mod_auth_vas] auth_vas_cleanup_request
[18:56:46] 10.1.192.79 TLSv1 DHE-RSA-AES256-SHA "GET /index.php HTTP/1.1" 540
[18:56:47] 10.1.192.79 TLSv1 DHE-RSA-AES256-SHA "GET /index.php HTTP/1.1" 2111
[18:57:03] [info] [ IP ] (70007)The timeout specified has expired: SSL input filter read failed.
[18:57:03] [info] [ IP ] Connection closed to child 32 with standard shutdown (server serverone:443)