Extensibility error received for topic ...: ... failed with the following error: connection timed out: /10.244.X.Y:8123
This issue is resolved in vRA 8.4.
base64 -d <<< '/Td6WFoAAATm1rRGAgAhARwAAAAQz1jM4AV9ApldADYbyRcPoXs3RneokXCaup584kklp/S+ZakqwL5n+BL8qNtU/9u9xoEWYmjHW8oQKdYlcITmJ9MpJIkRMGaj24wkrxvSu1UTBiwEb2zdtRvbV7u4dNnJcYw+dz81Y6mbn91uia7dRCPrdoOu93mfCy+CSNJMDQcm8KV/ZSgLuVpaFqpn9Oqyk5bydqziG3CWPga5mFDXK2lvP9l7hCItmZl2JpxSAz4hUKizt1mRNyIm521UUu96iHHYtyaKo6oOJsrAgwAcXs8++YEXcIeKg3K0+JghcY7R/acuBjBiLP/M6aOVIeSYNjfCEx0+sfaECJGvFePJFcJu1u/GUj+te3OO923eilXr7biflpHSvYcqa+Uaz8xokCyzGqWfwvCNhBUswP02Ba7sywygK+/NNlQ2vZ7RaDzPINTDYnJg4pxaaQFg//Zgtctu3VXtVq+GWUVJp4gNhvnfxjIRHumPaOy7mrBuKxWiNxvASzAm4k64HmGfrepYPMqnV2DEMLCPg/jgs/+6W10/VBl138IPk6+fbDTcAt819woqLp54zmldq75pmnlvsAb/n9XaKps4xuqKwHS2kFOJmw2ewjmfg5crpX/JssCbt+Kkz7GXtsiqFWQGfpD5ebpwryeB1UPRhVayNCmXKAVZzuI5fWw8bBqoVxicwvxO9lz+Ix8lG1v/wfjmkZOyD2LuMtlWCTUrG+RURsl6NgW1/kDxqLM/I2/0mN1TK5SXH5xT1atNylgufnfMmMfsaJZrdb+2fJR4vl17h0oZcYos8j08rAU8nC1jbIgIVe6DrCt6Ohcgx84mWlPr2VC5mT/OsI5Jr1/+5/FRgRvfgVH9CL2xKnSLT8q/gLDZudhy0GDBCoSkI2u9PppyEfldT1k0AAAAAIBQJuK58WWKAAG1Bf4KAAApPZwqscRn+wIAAAAABFla' | xz -d | bash -