# Default SiTCP IP is not working **URL:** \ **Category:** SiTCP障害情報 / SiTCP trouble info\ **Created:** [2021 年 11 月 10 日午前 2:22 UTC](https://sitcp.bbtech.co.jp/t/topic/58 "2021-11-10T02:22:04Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![hckim](https://sitcp.bbtech.co.jp/letter_avatar_proxy/v4/letter/h/3ec8ea/32.png) [@hckim](https://sitcp.bbtech.co.jp/u/hckim)\ **Post date:** [2021 年 11 月 10 日午前 2:22 UTC](https://sitcp.bbtech.co.jp/t/topic/58/1 "2021-11-10T02:22:04Z")
Dear whom it concerns, I am using multiple RPR-010 board made by Hayashi-Repic, where there is FPGA chip with installed SiTCP. Out of all the boards, we are using one board with default setting where IP address is 192.168.10.16. But when we are trying to use the board, we couldn’t access. I tried to run SiTCP utility, but, following message was shown. Error : RBCP Recv,VerType dose is invalid RBCP Recv, it’s not Acknowledge packet RBCP, invalid R/W flag. And with checking EEPROM Access, Error : RBCP Recv,VerType dose is invalid RBCP Recv, it’s not Acknowledge packet RBCP, packet ID does not match RBCP Recv,invalid R/W flag. I am worried during the test with SiTCP Utility and MPC writer, default setting is removed. Could you give me the solution for this issue, please? Thank you very much. Best regards, Hyunchul ---
**Author:** ![chappy](https://sitcp.bbtech.co.jp/letter_avatar_proxy/v4/letter/c/b3f665/32.png) [@chappy](https://sitcp.bbtech.co.jp/u/chappy)\ **Post date:** [2021 年 11 月 11 日午前 12:52 UTC](https://sitcp.bbtech.co.jp/t/topic/58/2 "2021-11-11T00:52:24Z")
Dear Hyunchul, Thank you for posting. > I am using multiple RPR-010 board made by Hayashi-Repic, We do not know the specifications of RPR-010, so we do not know the cause of the problem. If the phenomenon is occurring in one of several RPR-010s, is it possible that one is broken? Have you already contacted the manufacturer Hayashi-Repic? Thanks,