aeron-client/src/main/java/io/aeron/ChannelUriStringBuilder.java
public ChannelUriStringBuilder mtu(final Integer mtu)
    {
        if (null != mtu)
        {
            if (mtu < 32 || mtu > 65504)
            {
                throw new IllegalArgumentException("MTU not in range 32-65504: " + mtu);
            }

            if ((mtu & (FRAME_ALIGNMENT - 1)) != 0)
            {
                throw new IllegalArgumentException("MTU not a multiple of FRAME_ALIGNMENT: mtu=" + mtu);
            }
        }

        this.mtu = mtu;
        return this;
    }
public ChannelUriStringBuilder mtu(final Integer mtu)
    {
        if (null != mtu)
        {
            if (mtu < 32 || mtu > 65504)
            {
                throw new IllegalArgumentException("MTU not in range 32-65504: " + mtu);
            }

            if ((mtu & (FRAME_ALIGNMENT - 1)) != 0)
            {
                throw new IllegalArgumentException("MTU not a multiple of FRAME_ALIGNMENT: mtu=" + mtu);
            }
        }

        this.mtu = mtu;
        return this;
    }
Set the maximum transmission unit (MTU) including Aeron header for a datagram payload. If this is greater
than the network MTU for UDP then the packet will be fragmented and can amplify the impact of loss.

@param mtu the maximum transmission unit including Aeron header for a datagram payload.
@return this for a fluent API.
@see CommonContext#MTU_LENGTH_PARAM_NAME