Can you provide the routing table, export on the filter from the IX router "IX-OUT", and provide the destination you are attempting to traceroute to
IX Sample Route:
0 ADb dst-address=18.104.22.168/24 gateway=xxx.xxx.xxx.197 gateway-status=xxx.xxx.xxx.197 reachable via IX_Port distance=20 scope=40 target-scope=30 bgp-as-path="15169"
bgp-med=0 bgp-origin=igp received-from=IX 
Main Router Sample Route:
0 ADb dst-address=22.214.171.124/24 gateway=xxx.xxx.xxx.197 gateway-status=xxx.xxx.xxx.197 recursive via 126.96.36.199 Vultr - Uplink distance=200 scope=40 target-scope=30
bgp-as-path="15169" bgp-local-pref=100 bgp-med=0 bgp-origin=igp received-from=transfer_in
As shown in the Main Router example;
- xxx.xxx.xxx.197 Searching for IP on the Internet.
- IP addresses of IX cannot be found because they are not routed.
- IX When I set the Force-self from the Router to BGP; Tunnel IP address appears as the gateway address. However, in this case, the EoIP Tunneli is continuously disconnected and reconnected. In the form of this loop.